Chasm Lake Trail
ElevationAscent: 310' 94 m
Descent: -35' -11 m
High: 11,802' 3,597 m
Low: 11,527' 3,513 m
GradeAvg Grade: 8% (4°)
Max Grade: 32% (18°)
Current trail conditions
Popular runs nearby
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Lake Helene from Bear Lake
6.2 mi 9.9 km • Out and Back • 1,176 ft Ascent 358.38 m Ascent
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Best of Bear Lake Area Loop
5.7 mi 9.1 km • Loop • 1,293 ft Ascent 394.25 m Ascent
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Bear Lake TH to Fern Lake TH
8.5 mi 13.6 km • Point to Point • 1,180 ft Ascent 359.71 m Ascent
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“A dichotomous trail leading to the renowned Chasm Lake.”— Brian Smith
After crossing the upper reaches of the Roaring Fork River, at roughly mile 0.7, this trail begins to climb very steeply. This short but strenuous pitch proves well worth the effort as you are quickly rewarded with the absurd views at Chasm Lake.
From the lakeshore, you'll be able to view the majestic "Diamond," one of the steepest and most iconic rock faces in Colorado. Located on the east face of Longs Peak, The Diamond rises roughly 900' straight up.
Land Manager: National Park Service - Rocky Mountain National Park