Nov
21-23
Fr - Su
Website Registration

The Fat Ox Endurance Runs, held at Estrella Mountain Regional Park in Goodyear, Arizona, is a premier ultra-running event featuring multiple race distances including 48-hour, 24-hour, 12-hour, 6-hour, 100-mile, 100K, 50-mile, and 50K races. The event hosts the USATF 24-Hour Championship on a USATF-certified 0.988178-mile loop course that circles the park's turf area with scenic views of the Estrella Mountain Range. The course is a paved sidewalk loop with aid stations stocked 24 hours, and runners must bring their own lighting for night running.

The event offers a festive atmosphere with camping options, crew support areas, and awards including prize money for championship competitors. Visit the organization's website for the most recent information.

Always double-check with the organizer's website – things can change, and we might have sprinted past a few details!
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

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