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17.3 mi 27.9 km Boulder Skyline Traverse
Difficult Difficult
Superior, CO
Difficult Difficult
Superior, CO 139 
41.0 mi 65.9 km Grand Traverse Mountain Run
Difficult Difficult
Crested Butte, CO
Difficult Difficult
Crested Butte, CO 10 
5.5 mi 8.8 km Cathedral Lake Trail
Intermediate/Difficult Intermediate/Difficult
Aspen, CO
Intermediate/Difficult Intermediate/Difficult
Aspen, CO 18 
10.8 mi 17.4 km Aspen to Crested Butte via West Maroon Pass
Difficult Difficult
Snowmass Village, CO
Difficult Difficult
Snowmass Village, CO
6.5 mi 10.4 km American Lake
Intermediate/Difficult Intermediate/Difficult
Aspen, CO
Intermediate/Difficult Intermediate/Difficult
Aspen, CO 11 
32.6 mi 52.5 km Audi Power of Four 50k
Difficult Difficult
Aspen, CO
Difficult Difficult
Aspen, CO

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