Sourdough Trail

by Jesse Speer

by National Park Service

by Jesse Speer

by National Park Service

This is the premier single track bike trail, which runs from Peaceful Valley Campground to Rainbow Lakes 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.

In the winter this is a popular cross country skiing route.

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. In Boulder Ranger District, Roosevelt National Forest.

Please share your pictures, coordinates, GPS trace files or comments about this road.

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