Easy/Intermediate
3.4 (7)
Local Club: Boulder Mountainbike Alliance
Nov 17, 2025: Trail Update: South St Vrain
Nov 14, 2025: Another Step Closer to new Betasso Connector
Oct 24, 2025: Boulder County Moves One Step Closer to a Safer Boulder-to-Betasso Connection
Land Manager: City of Boulder, Colorado - Parks and Recreation
Chapman Drive Out-And-Back
11.2 mi 18.1 km • 1,330' Up 405.46 m Up • 1,330' Down 405.44 m Down
Boulder, CO
Dirty Bismark
15.7 mi 25.2 km • 933' Up 284.36 m Up • 929' Down 283.21 m Down
Superior, CO
Gunbarrel to Niwot: Cottontail Trail - Niwot Loop - LoBo Trail
15.9 mi 25.5 km • 496' Up 151.09 m Up • 567' Down 172.87 m Down
Gunbarrel, CO
Betasso Preserve
7.1 mi 11.5 km • 768' Up 234.03 m Up • 759' Down 231.27 m Down
Boulder, CO
Marshall Mathers LP
8.4 mi 13.5 km • 705' Up 214.85 m Up • 706' Down 215.04 m Down
Superior, CO
Walker Ranch
7.8 mi 12.6 km • 1,516' Up 462.02 m Up • 1,510' Down 460.32 m Down
Coal Creek, CO
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