Fat Ox

The Fat Ox Endurance Runs, held at Estrella Mountain Regional Park in Goodyear, Arizona, is a premier ultra-running event featuring multiple race options including 48-hour, 24-hour, 12-hour, and 6-hour fixed-time runs, as well as fixed-distance races like 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 scenic backdrop of the Estrella foothills. The event hosts the USATF 24-Hour National Championship, with prize money awarded to top finishers.

Runners benefit from a fully stocked aid station, accessible crew areas, and camping options nearby. The race emphasizes community, endurance, and personal achievement in a supportive atmosphere. Visit the organization's website for the most recent information.