13 miles, 3,400 feet — welcome to Mammoth vert
Other trail races within 61 miles
The Mammoth Bar Half Marathon packs approximately 3,400 feet of elevation gain into 13.1 miles of singletrack and OHV doubletrack above the American River Canyon. Two aid stations support runners on the relentlessly steep climbs and descents that define this course. No crew or pacers are allowed; runners must be self-supported between aid stations. Trekking poles are permitted.
Some ultra experience recommended
Auburn, CA, United StatesSeptember 07, 2025
Mammoth Bar Half Marathon is a loop trail race in Auburn, CA, United States, held on September 07, 2025. The course covers 13.1 miles, climbs 4,660 ft, and has a 4h30m cutoff.
| Location | Mile | Elevation | Cutoff |
|---|---|---|---|
Start Start | 0.0 | 617 ft | — |
Castle Rock Aid (outbound) Aid Station | 2.0 | 1,493 ft | — |
F.D.L. Aid Aid Station | 5.0 | 1,693 ft | — |
Castle Rock Aid (return) Aid Station | 11.3 | 1,493 ft | — |
Finish Finish | 13.1 | 617 ft | 4h12:00 PM |
Aid station details for this race are still being filled in. Cutoffs and access rules come from the race’s own published information and can change — check the official race details before planning around them.
Sign in for race-day weather at every station, points of interest, segment-by-segment analysis, pacing, and to save this race to your calendar.
September in Auburn's foothill canyon can see temperatures above 90°F with limited shade on exposed OHV trails
No required gear specified
No recommended gear specified
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