Easy/Intermediate
3.8 (4)
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
North Boulder Loop
8.3 mi 13.4 km • 372' Up 113.47 m Up • 371' Down 113.22 m Down
Boulder, CO
Spring Brook Loop
12.6 mi 20.2 km • 943' Up 287.5 m Up • 943' Down 287.41 m Down
Superior, CO
Marshall Mathers LP
8.4 mi 13.5 km • 705' Up 214.85 m Up • 706' Down 215.04 m Down
Superior, CO
Marshall Mesa - Doudy Draw Loops
10.4 mi 16.8 km • 921' Up 280.63 m Up • 923' Down 281.18 m Down
Superior, CO
Post Work Sunset Ride
6.7 mi 10.8 km • 467' Up 142.33 m Up • 450' Down 137.04 m Down
Erie, CO
Heil to Picture to Hall and Back
34.1 mi 54.9 km • 3,648' Up 1111.87 m Up • 3,648' Down 1111.94 m Down
Lyons, CO
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