Ultra Running Hub Goodyear, AZ, United States · Friday, November 20, 2026
Fat Ox 12 Hour Run
We hold no course length for this race — a timed or backyard event is measured by the clock, not the kilometre — so there is no Grit score to give you.
What the course asks
DUV results for the 2025 edition (12h) — ranked runners only. Starters are not published, so the field was at least this big and no finish rate can be given.
Typical conditions, November
Regional 2001-2020 average for November — NASA POWER, grid elevation 398 m. Not a forecast.
Results history
| Year | Race | Finishers | Men's winner | Women's winner |
|---|---|---|---|---|
| 2025 | 12h | 21 | Avinoam Maier · 118.478 km | Georgia Porter · 120.864 km |
| 2024 | 12h | 16 | Keifer Gilbert · 93.810 km | Kimberly Martin · 90.630 km |
| 2023 | 12h | 13 | Thomas May · 79.499 km | Maria Peck · 79.499 km |
| 2022 | 12h | 10 | Martine Bermudes · 76.282 km | Jen Francis · 100.101 km |
| 2021 | 12h | 16 | Eric Ebele · 98.491 km | Rachel Mlsna · 110.561 km |
| 2019 | 12h | 10 | Jeremy Eppley · 93.594 km | Cheryl Miller · 68.068 km |
The field grew 31% between 2024 (16) and 2025 (21). 33% of the 2025 field were women.
DUV results for the 2025 edition (12h) — ranked runners only. Starters are not published, so the field was at least this big and no finish rate can be given.
The Aid Station
Course-specific beta from the community
With trail terrain, choose a shoe with moderate cushioning for optimal performance.
Gear for this race
Chosen for this trail race.
- Trail Running Shoes Cushioning on trail that is still there in the last quarter.
- Race Nutrition Self-supported fuelling between aid stations.
- Hydration Vests Flask capacity without the bounce.
- Headlamps A 12 h limit puts you out there after dark.
- GPS Watches Battery life first — an ultra outlasts most full-GPS modes.
Similar races
Other trail ultras of the same format.