Fat Ox

The Fat Ox Endurance Runs, taking place from November 21-23, 2025, at Estrella Mountain Regional Park in Goodyear, AZ, offers a variety of ultra-running events including 48-hour, 24-hour, 12-hour, and 6-hour races, as well as 100-mile, 100K, 50-mile, and 50K distances. This event is known for its festive atmosphere and is designed for runners of all levels, from first-timers to seasoned ultra-marathoners. The course features a certified 0.988-mile loop, providing a supportive environment with accessible aid stations.

Participants can enjoy camping options and a chance to compete in the USATF 24-Hour Championship. Visit the organization's website for the most recent information.