Intermediate/Difficult
3.3 (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: USFS - Boulder Ranger District Office
West Mag Backcountry Big Ride
13.1 mi 21.1 km • 1,356' Up 413.44 m Up • 1,360' Down 414.48 m Down
Nederland, CO
West Magnolia: Winter Fat Bike Groomed Loop
4.6 mi 7.4 km • 253' Up 77.21 m Up • 255' Down 77.66 m Down
Nederland, CO
Switzerland Trail Gold Hill Road Loop
25.3 mi 40.7 km • 1,949' Up 593.94 m Up • 1,948' Down 593.78 m Down
Nederland, CO
Sourdough - Eldora - Nederland Loop
26.7 mi 43.0 km • 2,883' Up 878.83 m Up • 2,899' Down 883.5 m Down
Nederland, CO
Sugarloaf to Gordon Gulch Loop
13.5 mi 21.7 km • 1,590' Up 484.64 m Up • 1,607' Down 489.88 m Down
Boulder, CO
Hard Money Loop
5.5 mi 8.9 km • 1,012' Up 308.52 m Up • 1,013' Down 308.82 m Down
Central…, CO
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