Longs Peak is the crown jewel of Rocky Mountain National Park, and the Keyhole Route is the classic (and only non-technical) route to its 14,259-foot summit. This hike is a serious high-altitude endeavor involving exposed rock scrambling, shifting weather, and intense elevation gain — but it rewards with panoramic views, a huge sense of accomplishment, and a true alpine mountaineering experience.
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Trail Overview
- Location: Rocky Mountain National Park, Colorado
- Trailhead: Longs Peak Trailhead, near Estes Park
- Distance: ~15 miles round trip
- Elevation Gain: ~5,100 feet
- Estimated Time: 10–15 hours
- Difficulty: Very strenuous, non-technical but exposed
- Permit Required: Yes, for overnight camping; no permit required for day hike
Why Hike Longs Peak?
Longs is the only fourteener (14,000+ foot peak) in Rocky Mountain National Park and one of the most famous peaks in Colorado. While not a technical climb in summer, it demands respect due to altitude, exposure, and unpredictable weather. The Keyhole Route is a thrilling challenge for fit, experienced hikers looking to summit one of the most iconic mountains in the Rockies.
Route Breakdown
Trailhead to Boulder Field (~6.5 miles)
- Begin at Longs Peak Trailhead (9,405 ft)
- Well-maintained trail through forest and alpine tundra
- Pass landmarks like Goblins Forest, Chasm Junction, and Granite Pass
- Boulder Field is a wide, rock-strewn area — your last chance to turn around before things get serious
The Keyhole (13,100 ft)
- A gap in the rock ridge that marks the start of the technical section
- Windy and exposed — assess conditions before proceeding
The Ledges
- Narrow ledges on the backside of the peak
- Exposure and route-finding required
- Red and yellow bullseye markings indicate the safest path
The Trough
- A steep gully filled with loose rock
- Scrambling and sure-footedness required
- Considered the most physically demanding section
The Narrows
- Exposed rock ledge with significant drop-offs
- Use hands for balance — falls here can be fatal
The Homestretch
- Final push to the summit across steep, slick rock
- Use hands and feet for traction; often has residual snow/ice
Summit!
- Flat, spacious summit with views of the Continental Divide and Great Plains
- Sign the summit register, take a photo, and start your descent — the real work isn’t over yet
Start Time & Timing Tips
- Recommended Start Time: Between 2:00–4:00 a.m.
- Be off the summit before noon to avoid lightning storms
- Trailhead parking fills by 3:00 a.m. on summer weekends
Best Time to Hike
- Mid-July to mid-September: Typical snow-free season
- Early July: May still have snow/ice — use microspikes or turn back
- Afternoon storms: Common — never summit during thunderstorm conditions
What to Bring
- 3–4 liters of water (no water on trail)
- High-calorie snacks and lunch
- Helmet (optional but recommended for The Trough due to rockfall)
- Microspikes or traction devices (early/late season)
- Hiking poles for stability and descent
- Layers: insulating layer, windbreaker, hat, gloves
- Headlamp with extra batteries (you’ll start in the dark)
- Navigation (GPS app + physical map)
Acclimatization Tips
- Spend a night at 8,000–9,000 ft before hiking
- Do shorter alpine hikes to get used to the elevation
- Watch for signs of Acute Mountain Sickness (headache, nausea, dizziness)
Camping Info
- Boulder Field Campground: Permit required for overnight camping — excellent base for summit attempt
- Longs Peak Campground: First-come, first-served near trailhead
Safety & Risks
- Exposure: Many sections have steep drop-offs — only proceed if confident and weather is stable
- Weather: Changes rapidly — check forecasts and bring layers
- Turnaround Time: Most injuries happen on the descent — know when to call it
FAQs
Is Longs Peak a good first fourteener?
No. It’s better for experienced hikers and scramblers. For beginners, consider Mount Bierstadt or Mount Elbert instead.
Is it technical?
Not in summer. No ropes or climbing gear are needed, but scrambling, route-finding, and comfort with exposure are essential.
Can I hike without a permit?
Yes, for day hikes. Backpacking at Boulder Field requires a permit.
Are dogs allowed?
No. Pets are not allowed on Longs Peak Trail due to terrain and safety.
The Keyhole Route to Longs Peak is a true mountain adventure. It’s not just a hike — it’s an endurance test, a mental challenge, and a journey through some of the most dramatic alpine terrain in Colorado. With proper preparation, early start, and good conditions, you’ll earn one of the most satisfying summits in the Rockies.
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Where to Stay
When planning your trip to Rocky Mountain National Park, you’ll find a plethora of lodging options both inside and outside the park to suit every taste and budget. For a complete back-to-nature experience, you can camp within the park at one of the five campgrounds managed by Recreation.gov. If you prefer a bit more comfort, there are numerous cabins and cottages available for rent via platforms such as AirBNB and VRBO.
For a more structured camping experience, consider staying at a KOA Campground. The Estes Park KOA Campgrounds located just outside the park offer a variety of accommodation options including RV sites, tent sites, and cabins. Alternatively, for a unique overnight experience, consider booking a yurt or a glamping tent.
If you’re looking for a more traditional lodging experience, you can choose from a variety of hotels, motels, and vacation rentals in Estes Park and Grand Lake, the two gateway towns to the park.
Dining Options
Whether you plan to cook your own meals at your campsite or prefer to dine out, there are numerous dining options in and around Rocky Mountain National Park. The Moraine Park Campground Store provides groceries and camping supplies. For a quick bite, stop by the Trail Ridge Store & Cafe, which offers a variety of sandwiches, salads, and snacks.
In the neighboring towns of Estes Park and Grand Lake, you will find a range of restaurants, cafés, and diners offering everything from hearty breakfasts to fine dining. Don’t miss the iconic Rock Inn Mountain Tavern in Estes Park, known for its rustic charm and locally sourced menu.
Travel Tips & Safety
When visiting Rocky Mountain National Park, safety should be your top priority. Always stay hydrated, as the dry mountain air can dehydrate you quickly. Bring adequate gear including a map, compass, first aid kit, flashlight, food, water, and clothes to handle the elements.
Families with children will find many family-friendly trails in the park. Pets are allowed on a leash in campgrounds and picnic areas, but not on trails, to protect wildlife.
Due to the park’s high altitude, visitors may experience symptoms of altitude sickness. Take time to acclimate and pay attention to your body’s signals.
During the summer months, flash floods can occur without warning, especially in canyons and low-lying areas. Check the weather forecast before heading out and be prepared to move to higher ground if needed.
Latest Park Alerts
Before visiting, always check the latest park alerts on the official NPS website. This will provide you with up-to-date information on trail closures, weather conditions, wildfire risks, and road conditions.
Get Involved
If you love Rocky Mountain National Park and want to contribute to its preservation, consider volunteering. You can participate in trail work, help with visitor programs, or contribute to citizen science initiatives. To learn more about volunteering opportunities, visit the official NPS website.
Remember, visiting the park is not just about enjoying its natural beauty, but also about preserving it for future generations. Practice Leave No Trace principles and respect the park’s rules to ensure a safe and enjoyable visit for everyone.