Mammoth Bar Trail Runs
About this race
"Standard distance. Mammoth vert."
Mammoth Bar Trail Runs take place on the single-track and double-track trails of Mammoth Bar OHV Area in Auburn State Recreation Area, in the Endurance Capital of Auburn, California.
Mammoth Bar is known for its steep climbs and descents, as well as it's beautiful American River Canyon views.
These are not your average courses. You get more vert per dollar! Yay!
Ready to test your limits? The Mammoth Bar Trail Runs brings a highly anticipated Half-Marathon, 10K, 5K to Auburn on September 7, 2025. Expect a fantastic route right in the heart of California.
Pick your distance
Trail running
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
10K
Elevation gain is approximately 1,900 ft. Aid Stations: Castle Rock Aid: mile 2 Castle Rock Aid: mile 4.5
5K
Elevation gain is approximately 955 ft. No Aid Stations.
Weather Overview
These values reflect historical conditions on the race dates in Auburn in 2025, from Open-Meteo archive data.
About Auburn
Mammoth Bar Trail Runs takes place in Auburn, California, United States. The local timezone is America/Los_Angeles.
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Race information has been sourced from the event's official website and other publicly available resources. For the most up-to-date details, please refer to the official website directly. If you notice any incorrect or missing information, don't hesitate to reach out to us by email.