Mammoth Bar Trail Runs

SEP

6

2026

Join the new Mammoth Bar Trail Runs on Sept 6, 2026 in Auburn CA with Half Marathon and 10K on single track and double track trails. Expect steep climbs, thrilling descents and sweeping views of the American River Canyon.

Sun 6 Sep 2026

Auburn, California

Website

Half Marathon 10 kilometers

Always double-check with the organizer's website! This page may contain affiliate links.

Mammoth Bar Trail Runs - Overview

The Mammoth Bar Trail Runs take place on September 6, 2026 in Auburn, California. The event is organized by Skybreaker Racing under the Singletrack Running umbrella. The race program includes the following distances:

Half Marathon
10K

Registration prices shown on the event page list a reduced price and note a price increase after May 3, 2026.

Course and location

Races use single-track and double-track trails in the Mammoth Bar OHV Area within Auburn State Recreation Area. The course includes steep climbs and descents and offers views of the American River Canyon. The venue is listed near Old Foresthill Road, Auburn, CA 95603. The event description notes that Mammoth Bar is a newly offered event in this series. Visit the organization's website for the most recent information.

Half Marathon

10 km

10k