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Fat Ox

Buckeye, United States • 21-23 Nov 2025

The Fat Ox Endurance Runs, held at Estrella Mountain Regional Park in Goodyear, Arizona, is a multi-distance ultrarunning event featuring 48-hour, 24-hour, 12-hour, and 6-hour fixed-time races, as well as fixed-distance races including 100 miles, 100K, 50 miles, and 50K. The course is a USATF-certified 0.988-mile loop around the park’s turf area, offering a flat, concrete path with scenic Estrella Mountain foothills as a backdrop. The event hosts the USATF 24-Hour National Championship, with prize money awarded to top finishers. Runners enjoy a fully stocked aid station, on-course crew access, and camping options nearby. Night runners must bring their own lighting as the course is unlit. Visit the organization's website for the most recent information.

United States Arizona Buckeye

Race information

Website Registration
48 hr
48hrs
24 hr
24hrs
100 mi
100 Mile
12 hr
12hrs
100 km
100k
50 mi
50 Miler
6 hr
6hrs
50 km
50k
Visit the organization's website for the most recent information.
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