8.4 mi
Distance
2,500 ft
Elev. Gain
6h
Est. Time
Out & Back
Route Type
Difficult
Difficulty
About This Trail
We don't publish a description for Chasm Lake Trail unless we can point you at the agency it came from. We don't have one yet. The planning figures above — distance, elevation gain, estimated time, route type — come from the source listed on this trail.
National Park Service manages this trail and is the authority for conditions, closures and route notes. See official sources below. Spot something we should add?
Trail Conditions
Trail Conditions
Updated Apr 19, 2026 — may be out of date
No recent condition reports. Be the first to share what you see on the trail.
Hazards & Warnings
Trail Details
- No dogs
- Route Type
- Out & Back
- Surface
- Rock
Official sources & verification
Managed by National Park Service
Reserve or permit
- Apply for permit
Required permit application for this trail. Many systems run seasonal lotteries or fixed application windows — confirm current dates here.
- Rocky Mountain NP timed entry reservations
National Park Service, Rocky Mountain National Park
Source of truth
- Agency source page
The page our published rules and notes are derived from.
- Trail Conditions (Rocky Mountain NP)
National Park Service, Rocky Mountain National Park
- National Park Service unit page
Alerts, conditions, and the unit's plan-your-visit page.
Where it is
- Nearest town:
- Allenspark, CO · about 2 mi away
- County:
- Larimer County, CO
- Jurisdiction:
- Rocky Mountain National Park · National Park Service
Nearest town and county from U.S. Census Bureau place records and county boundaries.
Verify by phone or mail
- Operator:970-586-1206
- Address:1000 US Hwy 36 · Estes Park, CO · 80517
Best Seasons
Highlights
Reviews
No reviews yet
Be the first to share your experience and help others plan their visit.
Verified from National Park Service public trails dataset
Trail centerline: National Park Service public trails dataset. Source ↗
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Stay nearby
Campgrounds near this trail
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