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Fat Ox

Buckeye, United States • 21-23 Nov 2025

The Fat Ox Endurance Runs, held November 21-23, 2025, take place at Estrella Mountain Regional Park in Goodyear, Arizona. This ultra-running event features multiple race options including 48-hour, 24-hour, 12-hour, 6-hour timed runs, and fixed distances of 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 views.

The event hosts the prestigious USATF 24-Hour National Championship, with prize money awarded to top finishers. Runners enjoy a well-stocked aid station, live tracking, and a supportive atmosphere suitable for first-time ultras or personal bests. Camping and crew support are available nearby. Visit the organization's website for the most recent information.

United States Arizona Buckeye

Race information

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