State: Colorado
Location: Arapaho and Roosevelt National Forests
Length, One-Way: 12 miles
Trail Type: Out and Back
Minimum Elevation: 8600 feet
Maximum Elevation: 10200 feet
Best Season: June to October
Usage: Heavy
Maroon lake Colorado
Trail Information
The Sourdough Trail is the premier singletrack bike trail which runs from Peaceful Valley Campground to Rainbow Lakes Road (FDR 298), passing through Brainard Recreation Area, with a correspondingly high level of use. The southern half, done in the more downhill direction from Brainard to Rainbow Lake Road (perhaps with a return via the Peak-to-Peak Highway) is moderate. The northern end of the trail is more steep and technical. The steep, loose rock, climb/descent to the Middle Saint Vrain is especially difficult.
Directions
Access points are at Peaceful Valley, Beaver Reservoir, Beaver Bog, Brainard Lake Road east of Red Rock Lake and the Rainbow Lakes/Mountain Research Station Road.
