Fat Ox Endurance Runs
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Event Overview
The Fat Ox Endurance Runs is a multi-format running event held at Estrella Mountain Regional Park in Goodyear, Arizona. The event offers several race distances and formats, including fixed-time events and fixed-distance races.
Distances and Formats
Participants can choose from:
- 48 Hour, 24 Hour, 12 Hour, and 6 Hour fixed-time events.
- Fixed-distance races of 100 Mile, 100K, and 50K.
Course Details
All events are run on a USATF-certified loop course measuring 0.988178 miles (approximately 0.98 miles). The course is a paved, concrete loop that circumnavigates the Turf Picnic area within the park. It is a flat loop with minimal elevation gain.
Event Features
The event includes a fully stocked aid station on the course, which runners pass each loop. The 2025 edition will host the USATF 24-Hour National Championship on its certified course. A massage therapist is available on-site, and the event provides chip timing, live tracking, and finisher awards. Participants receive a gender-cut long sleeve shirt. Pacers are not permitted, but personal crew areas are available trackside.
Venue and Logistics
Estrella Mountain Regional Park is a large county park in the Phoenix metropolitan area. Parking is available on-site for a daily fee. Camping is available for an additional fee in a designated area approximately 400 feet from the course. Restroom facilities are located near the course. As the venue has no permanent lighting, runners participating at night must provide their own light source (headlamp or flashlight). Visit the organization's website for the most recent information.
