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Second-Third Flatiron Mesa Loop
Intermediate/Difficult Intermediate/Difficult
3.7 km 2.3 mi Boulder, CO 17 
Second-Third Flatiron Mesa Loop
Avg Rating
Intermediate/Difficult Intermediate/Difficult

Zach's Rating
Difficult Difficult
Boulder Skyline Traverse
Difficult Difficult
27.9 km 17.3 mi Superior, CO 142 
Boulder Skyline Traverse
Avg Rating
Difficult Difficult

Zach's Rating
Difficult Difficult
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