Cooper Pass Traverse Route
ElevationAscent: 704' 214 m
Descent: -1,160' -354 m
High: 11,837' 3,608 m
Low: 10,711' 3,265 m
GradeAvg Grade: 16% (9°)
Max Grade: 83% (40°)
Current trail conditions
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“An off-trail traverse that leads over Cooper Pass and by several mountain lakes.”— Thomas David Kehoe
From the north end of Island Lake, continue through a boulder field to Cooper Pass. This section is about 0.5 miles with 450 feet of climbing. In July, you can easily cross on snowfields to avoid the boulders, especially if you bring microspikes. The east side of Cooper Pass is a bit loose in places but nothing too difficult.
The west side of Cooper Pass has large areas of steep, loose scree. Go straight down the lowest line of the gully to avoid the loose scree, for about a quarter-mile. Then you'll reach the meadow and continue descending another quarter-mile to Upper Lake at 10.5 miles. Continue down another quarter-mile to Stone Lake to pick up Roaring Fork Trail # 3.
The best campsites at Stone Lake are found around the outlet of the lake.
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Land Manager: USFS - Arapaho & Roosevelt National Forests Office