Intermediate
4.5 (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: 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
Rhythm & Blues
10.3 mi 16.6 km • 825' Up 251.57 m Up • 825' Down 251.49 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
North Sourdough and St. Vrain Loop
5.4 mi 8.7 km • 641' Up 195.34 m Up • 650' Down 198.23 m Down
Nederland, CO
Easy Money/Millsite Loop
5.1 mi 8.2 km • 648' Up 197.54 m Up • 647' Down 197.31 m Down
Central…, CO
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