Races›United States›Arizona›Fat Ox Endurance Runs
Goodyear, AZ, seen from above
Friday 20 November 2026

Fat Ox Endurance Runs

Goodyear, Arizona · United States
UltraDesertEntries open

Loops the Sonoran Desert at Estrella Mountain Park

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Course

Fixed-time and fixed-distance runs on a certified 0.99-mile concrete and paved-sidewalk loop around the Turf Picnic area at Estrella Mountain Regional Park, Goodyear. Start and finish sit on the loop, which is almost flat at roughly 6ft of gain per lap. A fully stocked aid station is directly on course with a water point at the far end, staffed around the clock. Headlamps are required after dark.

100 Mile100 mi
100K100 km
50K50 km

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About

Fat Ox Endurance Runs is a multi-day ultramarathon at Estrella Mountain Regional Park in Goodyear, Arizona, with 50K, 100K, and 100-mile distances across Sonoran Desert terrain.

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