Intermediate/Difficult
2.9 (14)
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
The N Bus Loop
13.0 mi 21.0 km • 1,490' Up 454.13 m Up • 1,489' Down 453.83 m Down
Nederland, CO
West Magnolia Tour
8.0 mi 12.8 km • 590' Up 179.88 m Up • 608' Down 185.45 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
The Whole Casino
16.9 mi 27.1 km • 2,451' Up 746.95 m Up • 2,447' Down 745.8 m Down
Central…, CO
Maryland Mountain Complete Tour
12.4 mi 20.0 km • 1,807' Up 550.77 m Up • 1,811' Down 552.05 m Down
Central…, 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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