Fat Ox Endurance Runs

NOV
21-23
2025
Fat Ox at Estrella Mountain Regional Park offers 48, 24, 12 and 6 hour events plus 100 mile, 100K and 50K on a USATF certified 0.98 mile loop. Run day and night, chase a personal best, and soak up the festival vibe.
21-23 Nov 2025
48 hour 24 hour 100 miles 12 hour 100 kilometers 6 hour 50 kilometers

Always double-check with the organizer's website! This page may contain affiliate links.

Fat Ox Endurance Runs : November 21-23, 2025

The Fat Ox Endurance Runs take place November 21-23, 2025 at Estrella Mountain Regional Park in Goodyear, AZ (14805 W Vineyard Ave). The event includes fixed-time and fixed-distance races and will host the USATF 24-Hour Championship. Eligibility for USATF championship awards and prize money requires a current USATF membership and United States citizenship. The USATF prize purse for top men and women totals $4,000, distributed as: 1st $1,200; 2nd $500; 3rd $300.

Distances

  • 48 Hour fixed-time
  • 24 Hour fixed-time (USATF championship)
  • 12 Hour fixed-time
  • 6 Hour fixed-time
  • 100 Mile
  • 100K
  • 50 Mile
  • 50K

Course and logistical details

All races use a USATF-certified 0.988178 mile concrete loop around the Turf Picnic area. Total elevation gain is about 6 feet per loop with a maximum elevation near 923 feet. The course is marked with cones and flagging. There are timing mats on the loop and a timing tent located north of the aid station. A fully stocked aid station operates on course 24 hours with staple items and prepared meals; a water refill station is on the opposite end of the loop. Pacers are not permitted. Crews have a designated area and personal drop bags along the course; for the USATF championship, crew tents must remain within 100 meters of the main aid station. Camping is available for a fee in an overflow area about 400 feet from the course; parking incurs a $7 per car per day park entry fee. There are no venue lights at night. Visit the organization's website for the most recent information.

48 hr
48 Hour
24 hr
24 Hour
100 mi
100 Mile
12 hr
12 Hour
100 km
100k
6 hr
6 Hour
50 km
50k

Events nearby