About This Race

Mammoth Bar Trail Runs take place on the steep OHV trails of the Mammoth Bar OHV Area, in the Middle Fork American River Canyon near Auburn, California. The event offers Half Marathon, 10K, and 5K distances on terrain known for its steep climbs and descents. It is organized by Skybreaker Racing's Race Director under the Singletrack Running umbrella.

Course & Race Day Details

Hilly course
Elevation
Hilly Course
Trail surface
Surface
Trail Surface
ELEVATION GAIN
1000
feet
T-Shirt
Race Swag
Half Marathon, 10K: T-Shirt

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Choose Your Distance

Half Marathon Half Marathon
Elevation gain is approximately 4,300 ft. Aid Stations: Castle Rock Aid: mile 2 F.D.L. Aid: mile 5 Castle Rock Aid: mile 11.3
$79.00
Increases Jul 06
Register
10K 10K
Elevation gain is approximately 1,900 ft. Aid Stations: Castle Rock Aid: mile 2 Castle Rock Aid: mile 4.5
$59.00
Increases Jul 06
Register