Easy/Intermediate
4.2 (21)
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: City of Boulder Open Space and Mountain Parks
Heil Outer Loop from Corral TH
14.1 mi 22.6 km • 1,549' Up 472.24 m Up • 1,550' Down 472.41 m Down
Lyons, CO
Valmont Bike Park - Singletrack Hotlap
2.0 mi 3.2 km • 78' Up 23.73 m Up • 79' Down 24 m Down
Boulder, CO
Betasso Preserve
7.1 mi 11.5 km • 768' Up 234.03 m Up • 759' Down 231.27 m Down
Boulder, 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
Hall Ranch
11.8 mi 18.9 km • 1,750' Up 533.54 m Up • 1,750' Down 533.51 m Down
Lyons, CO
East Boulder Trail
12.2 mi 19.6 km • 611' Up 186.36 m Up • 611' Down 186.36 m Down
Gunbarrel, CO
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