United States
Nov
21-23
Fr - Su
Fat Ox
The Fat Ox Endurance Runs is a premier running event taking place at Estrella Mountain Regional Park in Goodyear, AZ. Scheduled for November 21-23, 2025, this event features a variety of race options including 48-hour, 24-hour, 12-hour, and 6-hour runs, as well as distances of 100 miles, 100K, 50 miles, and 50K. The course is a certified 0.988178-mile loop, ideal for both seasoned ultra-runners and newcomers.
The event also hosts the USATF 24-Hour Championship, offering a prize purse for top finishers. Participants can enjoy a supportive atmosphere with well-stocked aid stations and opportunities for camping. 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
