Trip · Rocky Mountain National Park, Colorado · June 2022

Longs Peak

Finished

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  • Video
  • Guide
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I went alone, in June 2022. 2 days. My film of it is below, and my free guide to the route, day by day, is in Details.

Highlights

Milestone · July 11, 2022

Solo Silent Hike Up Longs Peak - Colorado’s Most Iconic Summit

My film of the trip, published July 2022.

In Details

Milestone · October 3, 2026

The free guide

The Keyhole Route in 2 days, with a night at the Boulder Field. In June 2022, in my first month living in Denver, I climbed Longs Peak alone by the Keyhole Route: up from the Longs Peak Trailhead with a detour to Chasm Lake, a night in a stone windbreak at the Boulder Field, then the Keyhole, the Ledges, the Trough, the Narrows and the Homestretch to the summit early the next morning and back down. It's the trip from my film Solo Silent Hike Up Longs Peak. This guide has my GPX files, maps and notes for both days, the route above the Keyhole section by section, the 2026 wilderness permit, timed entry and rules, getting to the trailhead, snow by month, costs, safety and a trip sheet. Every page is free to read in Details below, with the PDF and GPX download.

In Details

Story

Photos

Photos from the trip.

  • Chasm Lake under the east face of Longs Peak, Day 1 mile 4.5. That's me on the shore.
    Chasm Lake under the east face of Longs Peak, Day 1 mile 4.5. That's me on the shore.
  • On the Narrows, Day 2.
    On the Narrows, Day 2.

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Details

The guide · Free · 42-page PDF + GPX files · 2027 season edition

Longs Peak Hiking Guide

The Keyhole Route in 2 days, with a night at the Boulder Field. Every page is below: read it here, or take it offline as a PDF with my GPX files (42-page PDF + GPX files, in one zip). No sign-up needed.

Download the PDF + GPXStart reading

The route

My GPS recording of 2 days on a relief map. The numbers are where each day starts; the red dot is the finish. The day maps are in the guide below, and the GPX files are a free download.

Relief map of the Longs Peak route: 2 days drawn in red with numbered day starts, labelled Longs Peak Trailhead, Longs Peak and Boulder Field.
Day 1Day 2Highest 14,260 ft (4,345 m)

Elevation, start to finish: highest 14,260 ft (4,345 m), lowest 9,390 ft (2,861 m).

Map data: Terrain: Mapzen Terrain Tiles (USGS 3DEP, SRTM) on AWS · Glaciers, rivers & lakes © OpenStreetMap contributors

At a glance

Days
2 days
Distance
about 17 miles
Climbing
About 5,600 ft (1,700 m) up
Nights
The Boulder Field, 12,760 ft (3,889 m), about 6 miles up
Permit
A wilderness permit to camp ($36 a trip)
Start and end
The Longs Peak Trailhead
Contents
  1. Welcome
  2. At a glance
  3. Is it open? (October 2026)
  4. Straight answers
  5. When to go
  6. Permits and the rules
  7. Getting there
  8. Day 1 Longs Peak Trailhead to the Boulder Field
  9. Day 2 Boulder Field to the summit and back down
  10. Other ways to do it
  11. Where I slept, food and water
  12. What it costs
  13. What I carried
  14. Weather, altitude and safety
  15. Using the GPX files
  16. Before you go, check these
  17. One-page trip sheet
  18. About this guide

Welcome

In June 2022 I climbed Longs Peak, 14,259 ft (4,346 m), the highest mountain in Rocky Mountain National Park, by the Keyhole Route. It was my first month living in Denver. I just moved there with my wife and puppy, and one of the reasons you move to Colorado is to hike mountains, specifically 14ers. I went alone and did it in two days: up from the Longs Peak Trailhead on the first afternoon, with a detour to Chasm Lake, to a night in a stone windbreak at the Boulder Field, then the Keyhole, the Ledges, the Trough, the Narrows and the Homestretch to the summit early the next morning, and all the way back down to my car. It's the trip from my film Solo Silent Hike Up Longs Peak.

By my GPS the first day was 8.4 miles, with the Chasm Lake detour. I didn't record the second day, so this guide gives its numbers as "about," from the mapped route and my first day's line.

Good to know first (October 2026). The Keyhole Route is open, but the first snow and ice of the autumn are on it: the park's conditions report of September 23, 2026 says ice has formed on parts of the route. The route is usually free of snow and ice only from about mid-July to mid-September. A night at the Boulder Field needs a wilderness permit and a bear canister, and between late May and mid-October you need a timed-entry reservation to drive in between 9 a.m. and 2 p.m. See Is it open?.

What's inside

  • Where things stand in October 2026, and straight answers to the questions people ask about Longs Peak
  • When to go, the wilderness permit and timed entry, the rules, and getting to the trailhead
  • Both days: my notes, the trail and the route above the Keyhole, where to turn back, maps with elevation profiles, and links to that day in my film
  • Other ways to do it, where I slept, food and water, what it costs, what I carried
  • Weather, altitude and safety, one page of things to check before you go, and a printable trip sheet

How to use it offline

Save this PDF to your phone's Files or Books app before you leave home. Load the GPX files and download offline maps before you drive up; the phone signal on the mountain is very unreliable. Each day starts on a new page. The film links need a connection; everything else works in airplane mode.

When I say "I," it's my own trip. Rules, quotas and fees change, so they're dated, and the checks are collected on one page: Before you go, check these. Times are Mountain time.

On a rock at the edge of the summit, Day 2.
On a rock at the edge of the summit, Day 2.

At a glance

Quick facts
DistanceAbout 17 miles (27 km) for my two days, 2.2 of them the Chasm Lake detour. The Park Service gives 7.5 miles to the summit, 15 round trip
ClimbingAbout 5,600 ft (1,700 m) up and down
Days2: 8.4 miles on Day 1 (my GPS), about 8.5 on Day 2 (not recorded)
Start and finishThe Longs Peak Trailhead, about 9,400 ft (2,865 m), off Colorado Highway 7 south of Estes Park
High pointLongs Peak, 14,259 ft (4,346 m), the highest point in Rocky Mountain National Park
SleepThe Boulder Field, 12,760 ft (3,889 m), about 6 miles up
DifficultyA long, steady trail to the Boulder Field, then a scramble with big drops from the Keyhole to the summit, at over 13,000 ft. The Park Service says it's not a hike
Permits (2026)A wilderness permit to camp ($36 a trip). A timed-entry reservation from late May to mid-October, 9 a.m. to 2 p.m.
DayRouteMiles (km)Up / down (ft)Sleep
1Longs Peak Trailhead to the Boulder Field, with Chasm Lake8.4 (13.6)3,674 / 350The Boulder Field, 12,760 ft
2The Boulder Field to the summit and back down to the trailheadabout 8.5 (13.7)about 1,910 / 5,260

Day 1 is from my GPS. Day 2 is from the mapped route (OpenStreetMap) and my Day 1 line, since I didn't record it. Without the Chasm Lake detour the round trip is about 14.8 miles. The trailhead, Boulder Field and summit heights are the Park Service's; the others are "about."

My route from the Longs Peak Trailhead, with Estes Park and the wilderness office. Day 2 is the mapped route, not a recording. Map data © OpenStreetMap contributors.
My route from the Longs Peak Trailhead, with Estes Park and the wilderness office. Day 2 is the mapped route, not a recording. Map data © OpenStreetMap contributors.

Is it open? (October 2026)

Checked on Rocky Mountain National Park's and recreation.gov's own pages on October 3, 2026.

Open, with the first snow. I found no closure of the Longs Peak Trail, the Chasm Lake Trail or the trailhead. The park's Longs Peak conditions report of September 23, 2026 says fall has arrived: the first snow of the season is on the Keyhole Route and ice has formed on parts of it. Its newest photos, from September 20, are of the Ledges, the Trough and the Narrows. On the Chasm Lake Trail the steep crossing was snow-free, but the report says the rock slabs below the lake are wet with runoff and ice is becoming a serious hazard this time of year. It says microspikes, or crampons and an ice axe, may be prudent. From about mid-September to mid-July the route is usually in winter or spring conditions.

Longs Peak Campground at the trailhead is closed for the winter. It usually opens in early July and closes in early September; the 2027 dates weren't posted yet.

Timed entry. In 2026 timed entry runs from May 22 to October 12: until then you need a reservation to drive into the park between 9 a.m. and 2 p.m., and that includes the Longs Peak area. Before 9 a.m. or after 2 p.m. you don't need one, and once you've picked up a wilderness permit it serves as your timed-entry reservation. You still need a park entrance pass: buy it on recreation.gov or at the Beaver Meadows entrance before you drive to the trailhead. The 2027 dates weren't announced yet.

What to do. Read the Longs Peak conditions report and the park's alerts the week before you go, and call the Wilderness Office, (970) 586-1242, about snow on the route.

Straight answers

How many days do I need? I did it in two: up to the Boulder Field in the afternoon, the summit and all the way down the next morning. Many people do it in one very long day; the Park Service says the 15-mile round trip takes 10 to 15 hours. See Other ways to do it.

How hard is it? Up to the Boulder Field it's a trail, long and steady. Above the Keyhole it's a scramble on rock with big drops. The videos I watched getting ready made it look pretty gnarly, and the names for the sections, like the Narrows, kind of hype it up and make it a bit scarier than it actually was. I've done harder things, so I was totally fine on it and felt prepared. The Park Service is blunter: the Keyhole Route is not a hike, and an unroped fall there would likely be fatal. If you've never scrambled on exposed rock, practice somewhere easier first.

Do I need a permit? Not to climb it in a day. To camp at the Boulder Field or anywhere else in the park's wilderness, you need a wilderness permit, $36 a trip in summer. See Permits and the rules.

Do I need microspikes or an ice axe? It depends on the month. In late June 2022 there was still some ice and snow up top, but everything was pretty manageable. I had microspikes and didn't use them once. That was before the usual snow-free window, which runs about mid-July to mid-September. Outside it, expect snow and ice on the Ledges, the Trough and the Narrows, and read the conditions report: the park says microspikes, or crampons and an ice axe, may be needed.

Is there water? Brooks along the trail and Boulder Brook at the Boulder Field (treat it all). None above the Boulder Field: the Park Service says to carry 3 to 4 quarts for the climb.

Can I fly a drone? No. Drones are banned everywhere in the park.

Can I bring my dog? No. Pets aren't allowed on any trail or in the wilderness in Rocky Mountain National Park.

Is there a phone signal? Don't count on it. The Park Service calls coverage extremely unreliable. Carry a satellite messenger or a phone with satellite SOS.

Looking back down the Trough, Day 2. That's me, small, in the gully.
Looking back down the Trough, Day 2. That's me, small, in the gully.

When to go

Late June. I went on June 28 and 29, 2022. The weather looked good, and that's one of the reasons I jumped on it so quick and did the walk-up permit: I had a nice day-and-a-half window of sunny skies. There was little to no snow on the trail, a few snow patches on the way to Chasm Lake, and still some ice and snow up top. The skies were partly cloudy.

Mid-July to mid-September. The Park Service says this is when the route is most often free of snow and ice, and it's when most people climb. It's also thunderstorm season: in June, July and August expect afternoon storms and lightning. Start very early and be back below tree line by noon.

The rest of the year. For most of the year Longs Peak is in winter conditions: snow, ice and strong wind on the Keyhole Route. That's a mountaineering trip, with crampons, an ice axe and the skills to use them.

Near the summit (estimated normals for about 13,350 ft, 1991 to 2020, from PRISM as published on Wikipedia; add wind chill):

MonthHigh / low °F (°C)Precipitation, in
May38 / 15 (3 / -10)4.0
June50 / 24 (10 / -4)2.2
July56 / 31 (13 / -1)2.7
August54 / 30 (12 / -1)2.6
September48 / 23 (9 / -5)2.6
October36 / 14 (2 / -10)2.7

From November to April the highs stay around 20 to 30 °F (-7 to -2 °C). The park says to expect temperature drops of 10 to 20 °F on the tundra when the weather turns. Sunrise in Estes Park is about 5:34 a.m. in late June and 6:29 a.m. on September 1.

Permits and the rules

These were checked on Rocky Mountain National Park's and recreation.gov's own pages on October 3, 2026.

A wilderness permit to camp. You need one for any night in the park's wilderness, including the Boulder Field. Summer dates (May 1 to October 31) open on recreation.gov at 8 a.m. Mountain time on March 1 each year, and bookings close 3 days before your first night. A few walk-up permits are given out in person; in 2026 in-person permits started on March 15.

How I did it, 2022. I went to the wilderness office that morning to snag a walk-up permit to spend the night up at the Boulder Field. It was very easy and cost maybe like thirty dollars. The whole process, talking to the ranger, took about five minutes. They just wanted to make sure I had a bear can and that I knew the conditions.

Picking it up. Every permit is picked up in person, up to 30 days ahead: at the Wilderness Office beside the Beaver Meadows Visitor Center, 1000 US Highway 36, just west of Estes Park, open 7 a.m. to 3:30 p.m. daily, (970) 586-1242; or, from May 15 to September 30, at the Kawuneeche Visitor Center on the west side. The Beaver Meadows office is closed on New Year's Day, Martin Luther King Jr. Day, Presidents' Day, Indigenous Peoples' Day, Veterans Day, Thanksgiving and Christmas; no summer holiday is on that list. You get an overnight dashtag with the permit: leave it on your dashboard at the trailhead.

Fees (2026). $36 a trip from May to October ($6 to reserve plus a $30 administrative fee), not per person or per night; $10 from November to April. The park entrance fee is separate.

The Boulder Field camp. Nine sites inside rock rings, the stone windbreaks, at 12,760 ft, 6 miles from the trailhead. There's a privy, and water from Boulder Brook. Camp inside the rings. No more than 3 nights in a row in one camp area.

Bear canisters. From April 1 to October 31 you must store food and trash in a hard-sided, commercially made bear-resistant canister below tree line and at the Boulder Field, and you have to show it at the office to get your permit. Keep it about 70 steps (200 ft) from your tent.

Human waste. There's a privy at the Boulder Field. Elsewhere above tree line, pack out solid waste in a waste bag; it's required.

Other rules. No campfires anywhere in the wilderness. No pets on trails or in the wilderness. No drones in the park. Groups at an individual site are 1 to 7 people.

Timed entry and the entrance pass. See Is it open? and What it costs.

Getting there

My way in, 2022. I got into my Subaru and did the roughly two-hour drive from Denver, past Boulder, up into this area right on the edge of the national park. I picked up my permit at the wilderness office in the morning, got a quick bite to eat at a restaurant on the way to the trailhead, and started hiking at 1:10 p.m.

Driving (2026). The Longs Peak Trailhead is at the end of Longs Peak Road, about 1 mile west of Colorado Highway 7. From Estes Park, drive about 9 miles south on Highway 7 from its junction with US-36, about 25 minutes. From Denver, the way I went is US-36 through Boulder and Lyons, then Highway 7 up the canyon: about 70 miles and 2 hours. From Denver International Airport it's about 81 miles, also about 2 hours without traffic (rough routing estimates).

Without a car. No shuttle or bus reaches the Longs Peak Trailhead. The park's shuttles and the Estes Park Hiker Shuttle serve the Bear Lake Road area, and the airport shuttle to Estes Park ($85 one way, as reported) stops in town. You need a car or a ride; don't count on booking a ride back from the trailhead, where the phone signal is unreliable.

Parking. There's a parking lot at the trailhead; a timed-entry reservation doesn't guarantee a space in it. Park only on the gravel or pavement, and put a copy of your timed-entry reservation on the dash if you have one. Car-camping in the lot isn't allowed, as reported.

Sleeping near the trailhead. Longs Peak Campground, right at the trailhead, is tent-only and first come, first served: about 26 sites, $30 a night in 2026, no water, open from about early July to early September. You pay with the Recreation.gov app at the kiosk, and it doesn't include the park entrance fee. The Forest Service's Olive Ridge Campground on Highway 7, about 15 miles south of Estes Park, is $29 a night for a single site, and Meeker Park Overflow, also on Highway 7, is $16. Estes Park has motels and lodges. Nothing on Highway 7 is open for a 2 a.m. breakfast, so eat the night before.

Chasm Lake under the east face of Longs Peak, Day 1 mile 4.5. That's me on the shore.
Chasm Lake under the east face of Longs Peak, Day 1 mile 4.5. That's me on the shore.

Day 1: Longs Peak Trailhead to the Boulder Field

Distance
8.4 mi (13.6 km)
Climbing
3,674 ft (1,120 m)
Descent
350 ft (107 m)
Time I took
4.9 hours (1:10 p.m. to 6:01 p.m.), about 4.4 of them moving
High point
the Boulder Field, 12,760 ft (3,889 m)
On the way
Goblins Forest (mile 1.3), Chasm Junction (3.6), Chasm Lake (4.5), back at Chasm Junction (5.8), Granite Pass (6.9)
Sleep
the Boulder Field, 12,760 ft
Water
brooks along the trail, Boulder Brook at the camp; treat it all

My day

I started out late, at 1:10 p.m. by my GPS, and I was so happy to be out there and hiking again. There was little to no snow on the trail. It climbs through the forest beside the brooks, and there was plenty of water.

Stone steps beside a stream in the forest, Day 1.
Stone steps beside a stream in the forest, Day 1.

Above the trees the trail crosses open, rocky tundra under big clouds. I love how Longs Peak looks: the gradual climb through the forest, the alpine zone between ten and eleven thousand feet, and then the sheer rock drop to the lake below.

Above tree line, Day 1.
Above tree line, Day 1.

At Chasm Junction, at 2:51 p.m., I turned off for Chasm Lake. I added it on just because I had a lot of time, and I'm glad I did. There was a little bit of snow on the way, which was kind of nice; it's always fun. I had the lake all to myself, right under the east face of Longs, and splashed some of its water on my face.

The Chasm Lake Trail above Peacock Pool, Day 1.
The Chasm Lake Trail above Peacock Pool, Day 1.
Crossing a snow patch on the way to Chasm Lake, Day 1.
Crossing a snow patch on the way to Chasm Lake, Day 1.

I was back on the main trail at 4:23, over Granite Pass at 4:59, and across the tundra into the Boulder Field. I reached my camp at 6:01 p.m. and had plenty of time before sunset just to eat and relax. There were more marmots than hikers, I would say.

Crossing the tundra toward the Boulder Field, Day 1.
Crossing the tundra toward the Boulder Field, Day 1.

The trail

The trailhead. The Longs Peak Trailhead, about 9,400 ft, has a ranger station, a parking lot and the tent-only Longs Peak Campground next to it. The East Longs Peak Trail starts by the ranger station.

Through the forest. About 0.6 mile up by my GPS, keep left at the first junction (the Eugenia Mine Trail goes right). The trail climbs steadily through the trees, past the Goblins Forest camp area at mile 1.3 by my GPS (1.2 by the park's count), and leaves the trees at about 11,000 ft.

Chasm Junction. At mile 3.6 by my GPS, about 11,540 ft, the Chasm Lake Trail turns left. For the Boulder Field keep right toward Granite Pass.

The Chasm Lake detour. The Chasm Lake Trail traverses above Peacock Pool and climbs past a waterfall to the lake, below the east face of Longs Peak (the Diamond) and Mount Meeker. It's not on the way to the summit: my detour, out and back with time at the lake, was 2.2 miles from 2:51 to 4:23 p.m. In early summer a steep snow slope can cover the trail before the lake; the park's conditions report calls it the Chasm crossing.

Granite Pass. At mile 6.9 by my GPS (about 4.7 without the detour), about 12,080 ft, the North Longs Peak Trail joins. Keep left. The trail switchbacks up the slope and then runs into the Boulder Field.

The Boulder Field. A wide field of boulders below the north face of Longs Peak, at 12,760 ft. The camp is a cluster of rock rings with a privy. Here the trail ends; above is the Keyhole, the notch in the ridge.

Where to turn back

The only way off is back down the trail. Turn back if a storm is building (in summer they come most afternoons), if the altitude is hitting you hard (a headache that gets worse, vomiting, confusion), or if you're running late. The Boulder Field is exposed and there's nowhere to shelter from lightning above tree line.

Watch this day

Day 1 · The permit and the drive (from 12:27) · My route on the map, Chasm Lake and water (from 13:42)

Day 1 map and elevation profile: my GPS recording. Map data © OpenStreetMap contributors.
Day 1 map and elevation profile: my GPS recording. Map data © OpenStreetMap contributors.
On the Narrows, Day 2.
On the Narrows, Day 2.

Day 2: Boulder Field to the summit and back down

Distance
about 8.5 mi (13.7 km), not recorded
Climbing
about 1,910 ft (580 m)
Descent
about 5,260 ft (1,600 m)
Clock
out of camp at first light; on the Homestretch at 7:36 a.m.; back at my car before noon, I believe
High point
Longs Peak, 14,259 ft (4,346 m)
On the way
the Keyhole (about mile 0.4), the summit (1.1), back at camp (2.3), Granite Pass (3.8), the trailhead (8.5)
Water
none above the Boulder Field; carry it from camp

My day

My tent was glowing in the dark before dawn. I packed up in the first light, had a quick breakfast on a rock, and walked up the Boulder Field toward the Keyhole.

My tent at the Boulder Field before dawn, Day 2.
My tent at the Boulder Field before dawn, Day 2.
Up the Boulder Field toward the Keyhole in the first light, Day 2.
Up the Boulder Field toward the Keyhole in the first light, Day 2.

The last part to the Keyhole is a scramble over big boulders. Beside the Keyhole is the Agnes Vaille shelter, a small stone hut. Through the Keyhole the route turns onto the west side of the mountain, and from there you follow the painted bullseyes.

In the big boulders below the Keyhole, Day 2.
In the big boulders below the Keyhole, Day 2.
Stepping out of the Agnes Vaille shelter by the Keyhole, Day 2.
Stepping out of the Agnes Vaille shelter by the Keyhole, Day 2.

I was expecting something even worse, because I guess these are class 3 scrambles at the top, or like climbing. But I've done harder things, so I was totally fine on it. There was still some ice and snow up top, but everything was pretty manageable, and I didn't use my microspikes once. My phone's photos put me at the bottom of the Trough at 6:56 a.m., at the top of it at 7:24 and on the Homestretch at 7:36.

Past the Keyhole, by one of the painted bullseyes, Day 2.
Past the Keyhole, by one of the painted bullseyes, Day 2.
Following the bullseyes across the slabs, Day 2.
Following the bullseyes across the slabs, Day 2.
Climbing the Trough, Day 2.
Climbing the Trough, Day 2.

The summit is a big, flat field of rock, with snow patches when I was there and views in every direction. I had a snack and walked to the edge.

On the summit, Day 2.
On the summit, Day 2.
Looking down from the edge of the summit, Day 2.
Looking down from the edge of the summit, Day 2.

I was back at the top of the Trough at 8:39, then went down through the Boulder Field and the same trail as Day 1, and was back at the trailhead and my car before noon, I believe. It was a pretty quick, not too bad hike.

The route

The Keyhole. About 0.4 mile above the camp, about 13,150 ft, the Keyhole is a notch in the ridge between Longs Peak and Storm Peak, with the stone Agnes Vaille shelter beside it. The shelter is not a lightning shelter. Here the trail ends and the climbing route begins. The Park Service calls the Keyhole to the summit the hardest 1.5 miles; the mapped line in this guide measures about 0.7 mile, but it can't follow every move. The route is marked with red and yellow bullseyes painted on the rock. Follow them; many falls happen to people who lose the route or take shortcuts.

The Ledges. From the Keyhole the route traverses narrow ledges along the west face, above a big drop to Glacier Gorge, including a slot with two iron bars drilled into the rock, then makes a descending traverse to the bottom of the Trough. Note where the Ledges meet the Trough: on the way down it's easy to miss.

The Trough. A long, steep gully of loose rock, about 600 ft up to a notch at its top, often with snow or ice in it until midsummer. Watch for rocks knocked down by people above you, and don't knock any down.

The Narrows. A narrow ledge along the south face, with a sheer drop below. It's short, and it's where the exposure feels biggest.

The Homestretch. Steep, smooth granite slabs to the summit, 14,259 ft; dangerous when wet or icy.

Down. The same way back, following the bullseyes. The Park Service says many accidents on the Keyhole Route happen on the way down. Then the Day 1 trail from the Boulder Field to the trailhead, about 6.3 miles by my Day 1 line.

Where to turn back

The only way off is back the way you came. The Park Service recommends being back below tree line by noon because of lightning, and advises starting from the trailhead no later than 3 a.m. on a day climb; from the Boulder Field you have a few hours' head start. Turn around at the first sign of a storm, if you lose the bullseyes, if there's ice you're not equipped for, or if the altitude is getting worse.

Watch this day

Day 2 · How hard it was (from 14:25)

The Keyhole Route above the Boulder Field: the mapped route (OpenStreetMap), not my recording. Map data © OpenStreetMap contributors.
The Keyhole Route above the Boulder Field: the mapped route (OpenStreetMap), not my recording. Map data © OpenStreetMap contributors.
Day 2 map and elevation profile: the mapped Keyhole Route and my Day 1 line back down, not a recording. Map data © OpenStreetMap contributors.
Day 2 map and elevation profile: the mapped Keyhole Route and my Day 1 line back down, not a recording. Map data © OpenStreetMap contributors.

Other ways to do it

In one day

This is how many people climb Longs Peak: the Park Service says 15 miles round trip, 10 to 15 hours, and to start no later than 3 a.m. so you're off the summit early. No wilderness permit is needed. Looking back, I thought 14er summits are pretty basic, and I could have done this in a single day: I would have packed lighter, without the bear can, the sleeping bag and the tent, and been even quicker. I said that if I'd started in the morning I'd have summited around lunchtime and been back before sunset. The Park Service's advice is to start much earlier than that and be back below tree line by noon, because of the afternoon storms. Follow theirs.

Two days, my way

A night at the Boulder Field (or at Goblins Forest, 1.2 miles up) splits the climb, lets you start the scramble at first light from 12,760 ft, and gets you used to the altitude. It needs the wilderness permit and a bear canister.

Just Chasm Lake

The Chasm Lake detour is a fine day hike on its own: about 9 miles round trip from the trailhead by my Day 1 line (the lake is at mile 4.5), with the east face of Longs Peak right above you. Expect snow on the last part of the trail in early summer.

Other routes up Longs Peak

The Loft, Clark's Arrow, the North Face (the Cables) and Keplinger's Couloir are other routes to the summit. They're harder or need more route-finding, ropes or snow skills. I didn't do them.

Where I slept, food and water

Where I slept

NightWhereHeight
1My tent in a stone windbreak at the Boulder Field (Day 1 mile 8.4)12,760 ft (3,889 m)

The Boulder Field. I set up my one-person tent inside one of the stone windbreaks, put on my down jacket as it got cooler, and blew up my sleeping pad with a pump sack. It's above tree line and exposed to wind. I forgot my gloves and wasn't looking forward to cold hands during the summit.

Pitching my tent inside a stone windbreak, Day 1.
Pitching my tent inside a stone windbreak, Day 1.

The marmots. Those little buddies were hungry. Someone's been feeding them, because every time I opened a bag of food they showed up and poked their heads up over the rocks. Keep everything in your canister, and don't feed them.

A marmot in the boulders, Day 1.
A marmot in the boulders, Day 1.

Food and water

What I ate. A dehydrated meal in my pot at camp, eaten with a long spoon, and a quick breakfast on a rock in the morning. My food went in the bear canister.

Dinner in the windbreak, with Longs Peak behind, Day 1.
Dinner in the windbreak, with Longs Peak behind, Day 1.

Water. There was plenty of water in the brooks along the trail, and there was also water at the Boulder Field, which I had to ask the ranger about. It made sense: there was still snow up there and I could see it from the trailhead, so there would be some water flowing down Boulder Brook. I filled my bottle from a trickle between the boulders. Treat it all. In late summer and autumn the flow at the Boulder Field can be small, so ask at the Wilderness Office. Above the Boulder Field there's no water: carry 3 to 4 quarts for the climb.

What it costs

The only cost I mention in my film is the walk-up permit: it cost maybe like thirty dollars.

For your budget (2026, US dollars):

ItemCost
Wilderness permit, to camp$36 a trip (May to October)
Park entrance, one vehicle$30 for 1 day, $35 for 7 days, $70 for a Rocky Mountain annual pass, $80 for the America the Beautiful pass (US residents); timed entry $2
Non-US visitors, 16 and overAn extra $100 each in 2026, unless you hold an annual pass; the non-resident America the Beautiful pass is $250
Longs Peak Campground$30 a night
A motel in Estes Park, mid-JulyAbout $205 to $290 a night, as reported
Bear canister rental (Kirk's Mountain Adventures, Estes Park)$3 a night, as reported
Helmet, microspikes (Estes Park Mountain Shop)About $8 and $15 a day, as reported
A rental car from Denver airport, 2 to 3 daysAbout $150 to $400 plus fees and taxes (estimate)
Gas, Denver airport to the trailhead and backAbout $25 to $30 (estimate)

For a day climb from Denver it can be as little as the entrance fee and gas. With a night at the Boulder Field, a rental car and a motel, budget roughly $450 to $800 for one person from Denver airport, before food and flights.

What I carried

From my film (I have no full gear list for this trip):

  • Shoes: trail running shoes
  • Sleeping: a one-person tent, a sleeping bag and an inflatable pad with a pump sack
  • Clothes: a down jacket and a hooded jacket and beanie for the summit morning. I forgot my gloves; bring yours
  • Snow: microspikes, which I didn't use
  • Food: a bear canister, a pot and dehydrated meals
  • Camera: a Sony a7S III with a 20 mm f/1.4 lens and a tripod
  • Navigation: the AllTrails app, which recorded Day 1

What this hike needs:

  • For a night out: the wilderness permit and a hard-sided bear canister
  • 3 to 4 quarts of water for the climb, a filter, and food
  • Warm layers, a hat, gloves, a rain jacket, sun protection and a headlamp
  • A helmet is a good idea on the Trough and the Homestretch, where rocks fall
  • Outside mid-July to mid-September: microspikes, or crampons and an ice axe and the skills to use them
  • A satellite messenger or a phone with satellite SOS

Weather, altitude and safety

Emergencies. Call or text 911 (a text can get through when a call won't). There's an emergency telephone at the trailhead ranger station. Rescues on Longs Peak are dangerous and can take many hours, even days. The phone signal is very unreliable, so carry a satellite messenger and leave your plan with someone. A CORSAR card from Colorado Parks and Wildlife ($5 for a year, $20 for five) helps pay Colorado's county rescue teams, not the Park Service; it isn't insurance.

The route itself. Above the Keyhole a fall can be fatal, and people have died on Longs Peak. The Park Service says many accidents happen on the way down, and to people who lose the route or take shortcuts, and some to people climbing alone. I climbed alone; if you do, be extra careful and turn back early.

Lightning. In June, July and August afternoon thunderstorms are common. The Boulder Field, the Keyhole and everything above are exposed. Start early, be back below tree line by noon, and turn around at the first thunder. The Agnes Vaille shelter is not a lightning shelter.

Snow and ice. Even in summer, ice can form on the upper route after a cold night, and it can be hard to see in the shadows. Outside about mid-July to mid-September, expect it.

Altitude. I'd been living in Denver, at 5,280 ft, for a month. Coming from sea level, the altitude above 12,000 ft will hit harder. The CDC says about a quarter of visitors who sleep above 8,000 ft in Colorado get altitude sickness, and that two or three nights at 8,000 to 9,000 ft before going higher protect you well. Flying in and sleeping at the Boulder Field the next night is a much bigger jump than that. Watch for headache, dizziness and nausea, and go down if it gets worse.

Wind and cold. The Boulder Field is exposed and often windy. Bring warm layers and gloves even in summer.

Using the GPX files

FileWhat it is
longs-peak-day-1.gpxDay 1: my own GPS recording, the Longs Peak Trailhead to the Boulder Field with Chasm Lake, 8.4 mi
longs-peak-day-2-keyhole-route.gpxDay 2: not a recording. The Keyhole Route from the Boulder Field to the summit and back as OpenStreetMap draws it, then my Day 1 line back down without the Chasm Lake detour, about 8.5 mi
longs-peak-full-route.gpxBoth days in one file, with waypoints for the places in this guide

The Day 1 file is where I actually went, with all timestamps removed. I didn't record Day 2, so its file is built and its numbers are "about." Above the Keyhole there's no trail: follow the painted bullseyes, not a GPS line.

AllTrails: on alltrails.com, create a new map and use Import (offline maps need a paid plan). Gaia GPS: open the file on your phone and choose Gaia GPS, or Import on gaiagps.com. Garmin: Garmin Connect on the web, Training, Courses, Import, then send it to your watch. Organic Maps (free): download the offline map for Colorado, then open the GPX file with it.

Before you go, check these

These change every year. Everything else in this guide stays the same.

Permits and entry

  • To camp: the wilderness permit on recreation.gov from March 1 at 8 a.m. Mountain time, or a walk-up permit at the Wilderness Office; pick it up in person with your bear canister
  • The timed-entry dates and hours for 2027, if you'll arrive between 9 a.m. and 2 p.m.
  • The entrance fees for 2027

Is it open?

  • The Longs Peak conditions report and the park's alerts, for snow, ice and closures
  • The forecast for Longs Peak (forecast.weather.gov) for thunderstorms and wind
  • Longs Peak Campground's 2027 dates, if you want to sleep at the trailhead

Getting there

  • Your car, your start time and, in summer, a plan for parking at the trailhead

Your stuff

  • Water for the climb, warm layers, gloves, a headlamp, a helmet if you have one, and snow gear outside midsummer
  • Offline maps and the GPX files on your phone, and a satellite messenger

One-page trip sheet

Daymi (km)From, toSleepNotes
18.4 (13.6)Longs Peak Trailhead to the Boulder FieldThe Boulder Field, 12,760 ftGoblins Forest 1.3, Chasm Junction 3.6, Chasm Lake 4.5, Chasm Junction 5.8, Granite Pass 6.9
2about 8.5 (13.7)The Boulder Field to the summit and back downAbout: Keyhole 0.4, Trough 0.8, Narrows 0.9, Homestretch 1.0, summit 1.1, camp 2.3, Granite Pass 3.8
Totalabout 17 (27)About 5,600 ft up and down

Day 1 miles are from my GPS; Day 2 from the mapped route, not recorded. Officially it's 7.5 miles from the trailhead to the summit.

Places: Estes Park · the Wilderness Office at Beaver Meadows · the Longs Peak Trailhead, about 9,400 ft · Goblins Forest · Chasm Junction · Chasm Lake · Granite Pass · the Boulder Field, 12,760 ft · the Keyhole and the Agnes Vaille shelter · the Ledges · the Trough · the Narrows · the Homestretch · Longs Peak, 14,259 ft

Status (October 2026): open; first snow and ice on the route. Usually snow-free mid-July to mid-September.

Permits (2026): wilderness permit to camp, $36 a trip, recreation.gov from March 1 or walk-up; pick up in person with a bear canister. Timed entry May 22 to Oct 12, 9 a.m. to 2 p.m.

Rules: bear canister, pack out waste above tree line, no fires, no pets, no drones.

Timing: start early; back below tree line by noon; turn around at the first thunder.

Emergency: 911 · Wilderness Office (970) 586-1242 · park information (970) 586-1206.

About this guide

Longs Peak Hiking Guide: The Keyhole Route in 2 days, with a night at the Boulder Field, by Kraig Adams. 2027 season edition, updated October 2026.

I climbed it alone on June 28 and 29, 2022, and made a film about it: Solo Silent Hike Up Longs Peak. Everything in first person comes from that trip: the film and its description, my GPS recording of Day 1, my notes on it and my photos. I didn't record Day 2, so its numbers come from the mapped route. Permits, access and safety facts were checked on October 3, 2026, and anything that changes yearly is dated.

Updates and contact. If something has changed, or you spot a mistake, email me at kraig@kraigadams.com.

No affiliate links. There are none in this guide, and nobody paid for a mention in it.

Safety. Longs Peak has real risks: exposure and falls, rockfall, lightning, ice, altitude, cold and a long day. This guide describes my trip, not current conditions. Check with Rocky Mountain National Park, and turn back when conditions aren't right. You're responsible for your own safety.

Copyright. © 2026 Kraig Adams. This guide, its photos and the GPX files are for your personal use. Please don't share or resell them.

Credits. Photos are frames from my film; the cover is my film's YouTube thumbnail. The Day 1 GPX is my own recording; the Day 2 GPX and the Day 2 maps use OpenStreetMap data. Maps © OpenStreetMap contributors, openstreetmap.org/copyright (ODbL). Relief: Mapzen Terrain Tiles, from USGS elevation data. Facts from Rocky Mountain National Park, recreation.gov, the National Weather Service, the US Naval Observatory, the CDC, Colorado Parks and Wildlife, the Forest Service and the businesses named.

Download the PDF + GPX

The details

Format
A 42-page PDF sized for a phone (A5, prints fine too) and a folder of GPX files, in one zip download.
Edition
2027 season edition, updated October 2026.
Questions
Email kraig@kraigadams.com.

Questions

Do you need a permit to climb Longs Peak?
Not for a day climb. To camp at the Boulder Field you need a Rocky Mountain National Park wilderness permit ($36 a trip in summer 2026), picked up in person with a bear canister. In 2026 you also needed a timed-entry reservation to drive into the park between 9 a.m. and 2 p.m. from May 22 to October 12, unless you arrive earlier.
How long is the Keyhole Route on Longs Peak?
The Park Service says 7.5 miles to the summit and 15 miles round trip, 10 to 15 hours. My first day, from the trailhead with a detour to Chasm Lake, was 8.4 miles by my GPS; the second, from the Boulder Field to the summit and down, about 8.5.
How hard is Longs Peak?
Up to the Boulder Field it's a long, steady trail. Above the Keyhole it's a scramble on rock with big drops, at over 13,000 ft, and the Park Service says it's not a hike: a fall there can be fatal. I found it less scary than the videos I'd watched, but I'd done harder scrambles before.
When is the best time to climb Longs Peak?
The route is most often free of snow and ice from about mid-July to mid-September. That's also thunderstorm season, so start very early and be back below tree line by noon. I went in late June, with some ice and snow still up top.
Can you camp at the Boulder Field on Longs Peak?
Yes, with a wilderness permit: nine sites inside stone windbreaks at 12,760 ft, about 6 miles from the trailhead, with a privy and water from Boulder Brook. A hard-sided bear canister is required.
Is there water on the Keyhole Route?
There are brooks along the trail and Boulder Brook at the Boulder Field (treat it). Above the Boulder Field there's none: the Park Service says to carry 3 to 4 quarts.

Timeline · newest first

  1. Published · October 3, 2026

    Wrote the guide

    The day-by-day guide to the route, made from my film, my GPS recording and my notes.

  2. Shared · February 6, 2026 · 9,915 views

    The film on Facebook

  3. Published · July 11, 2022 · YouTube · 197,421 views

    Published the film: Solo Silent Hike Up Longs Peak - Colorado’s Most Iconic Summit

  4. On the trail · June 2022

    Day 2: Boulder Field to the summit and back down

    The day in the guide: Day 2: Boulder Field to the summit and back down.

  5. On the trail · June 2022

    Day 1: Longs Peak Trailhead to the Boulder Field

    The day in the guide: Day 1: Longs Peak Trailhead to the Boulder Field.

  6. On the trail · June 2022

    The trip: Longs Peak

    Rocky Mountain National Park, Colorado · 2 days