Fat Ox Endurance Runs
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Fat Ox Endurance Runs
Fat Ox Endurance Runs is a multi-day endurance event held November 20-22, 2026 at Estrella Mountain Regional Park in Goodyear, AZ. The event includes fixed-time and fixed-distance formats on a USATF certified 0.988178 mile concrete loop around the park turf area.
Distances and formats include:
- 48 Hour
- 24 Hour
- 12 Hour
- 6 Hour
- 100 Mile
- 100K
- 50K
The course circles the Turf Picnic area with cones and flagging. Runners pass a fully stocked aid station once per loop and a water refill station on the opposite end of the loop. Total elevation gain is about 6 feet per loop and maximum elevation is 923 feet. The venue does not have course lighting after dark so participants planning night running should bring a headlamp or flashlight.
Pacers are not permitted. A designated crew and drop bag area is available near the course; for the USATF championship, crew tents must remain within 100 meters of the main aid station. Camping and parking are managed by Maricopa County parks and may require additional fees; parking incurs a per car per day entry fee. An onsite EMT will provide medical coverage during the 48 hour event.
The 2026 event will host the USATF 24 Hour Championships. Prize money of $4,000 is reserved for top male and female finishers. Championship entrants must hold valid USATF membership and are subject to applicable drug testing and eligibility rules. Visit the organization's website for the most recent information.
