Fat Ox Endurance Runs
Buckeye, United States • 20-22 Nov 2026
Event Overview
The Fat Ox Endurance Runs is a multi-day fixed-time running festival held at Estrella Mountain Regional Park in Goodyear, Arizona. The 2026 event will host the USATF 24-Hour National Championship. The event features several distances run on a USATF-certified 0.988178-mile (approximately 1 mile) concrete loop.
Distances and Format
The event offers fixed-time and fixed-distance races:
- 48 Hour
- 24 Hour (including the USATF Championship)
- 12 Hour
- 6 Hour
- 100 Mile
- 100K
- 50K
Course Details
The course is a flat, paved loop around the park's Turf Picnic area, with about 6 feet of elevation gain per loop. A fully stocked aid station is located directly on the course, passed once per loop. Runners must provide their own lighting (headlamp or flashlight) for night running. Crews are allowed to set up near the course, but pacers are not permitted.
Awards and Perks
All finishers receive an award. A custom race buckle is awarded for the 100-mile and 200-mile distances. A prize purse is offered for the USATF 24-Hour Championship top finishers. Registration includes a gender-cut long-sleeve shirt and chip-timed results.
Venue and Logistics
The event is held at Estrella Mountain Regional Park. There is a $10 per car daily park entry fee. On-site camping is available for an additional fee. The event provides live tracking, an on-site EMT, and tent/cot rentals. Visit the organization's website for the most recent information.