Boulder
708 cycling climbs
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708
Total Climbs
By Category
Cat 12
Cat 228
Cat 378
Cat 4136
Uncat1
Altitude Range
Min1502m
Max3568m
Cities6
Large Cities1
Hardest Climbs
Highest difficulty score in this region
#1
Rock Creek Road (CR 107)
8.8 km at 8.2%
↑ 713mCat 1DirtBoulder, United States
#2
Climb #1663088
2.0 km at 16.9%
↑ 334mCat 2DirtBoulder, United States
#3
Climb #1062263
2.7 km at 14.3%
↑ 380mCat 2DirtBoulder, United States
#4
Pennsylvania Gulch Road from Boulder
4.0 km at 11.3%
↑ 446mCat 2UnpavedBoulder, United States
Steepest Climbs
The steepest gradients in this region
Longest Climbs
Epic distances to challenge yourself
#1
Brainard Lake Road from Boulder
11.7 km at 4.9%
↑ 569mCat 2AsphaltBoulder, United States
#2
Flagstaff Road (CR 77)
11.2 km at 6.8%
↑ 751mCat 1AsphaltBoulder, United States
#3
Left Hand Reservoir Road from Boulder
10.5 km at 5.5%
↑ 578mCat 2AsphaltBoulder, United States
#4
County Highway 87 from Boulder
10.1 km at 5.6%
↑ 561mCat 2AsphaltBoulder, United States
Major Cities
6 cities ·269K total population