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Difficult
“A fun, loose, rocky descent from Road 2321 to South Sourdough Trail - Southern Half. ”
0.6
Miles1.0
KMSingletrack
Difficult
Singletrack
Difficult
Local Club: Boulder Mountainbike Alliance
Feb 22, 2024: Join us in Shaping Colorado’s Outdoor Future
Feb 1, 2024: Eagle-Sage Trail Closures
Jan 31, 2024: Coalton Trail Reopening Feb. 1
Land Manager: USFS - Boulder Ranger District Office
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
Ceran St. Vrain to Miller Rock
6.2 mi 9.9 km • 897' Up 273.36 m Up • 897' Down 273.36 m Down
Nederland, CO
Sherwood From Nederland
5.8 mi 9.3 km • 789' Up 240.44 m Up • 793' Down 241.57 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
Ride like a Moto
10.1 mi 16.3 km • 2,101' Up 640.44 m Up • 2,101' Down 640.24 m Down
Niwot, CO
North Boulder Loop
8.3 mi 13.4 km • 372' Up 113.47 m Up • 371' Down 113.22 m Down
Boulder, CO
Unknown
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