Easy/Intermediate
2.5 (2)
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: Boulder County, CO - Parks and Open Space
North Boulder Loop
8.3 mi 13.4 km • 372' Up 113.47 m Up • 371' Down 113.22 m Down
Boulder, 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
Spring Brook Loop
12.6 mi 20.2 km • 943' Up 287.5 m Up • 943' Down 287.41 m Down
Superior, CO
Broomfield Trail and Coal Creek Trail loop
19.7 mi 31.7 km • 449' Up 136.77 m Up • 452' Down 137.66 m Down
Erie, CO
Betasso Preserve
7.1 mi 11.5 km • 768' Up 234.03 m Up • 759' Down 231.27 m Down
Boulder, 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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