Race planning

Plan Fat Ox Endurance Runs

Use the listed edition as your starting point. Each tool keeps imported race facts separate from the targets and assumptions you choose.

Edition notes: Online registration closes November 16 at 11:59 PM Mountain Time. The 48-hour race starts November 20 at 8:00 AM; the USATF 24-Hour Championship starts November 21 at 8:00 AM. The organizer also lists race-day registration from 7:00 AM.

Your shortlist →Download calendar dates (.ics)

Listed edition: Nov 20, 2026 – Nov 22, 2026
Format: 48-Hour
Distance: 48 hr / 24 hr / 100 mi
Local start time: 8:00 AM Friday (48 hours); 8:00 AM Saturday (USATF 24-hour championship)
Duration / cutoff: 48 hours for the headline race. All races end at 8:00 AM on Sunday, November 22, so the 100 miles, which starts at 9:00 AM Friday, has up to 47 hours. The multiday runs have no DNFs and allow no drop-downs: runners simply go as far as they can in the time.
Crew and pacers: Pacers are not allowed in any Fat Ox race. Family and friends can spectate, and crews get a designated area beside the course, where runners can also set up their own table, chairs and pop-up tent at no charge. For the USATF Championship, crew tents must be within 100 meters either side of the main aid station.
Drop bags: There are no remote drop bags. Each runner keeps a personal drop bag in the crew area beside the loop, which comes around every 0.988 miles.

Recorded facts reviewed Oct 24, 2026. Check the organizer’s latest rules. Calendar downloads use all-day dates and do not set a starting alarm.

Pace & duration

Choose a distance target. The recorded duration or cutoff is filled in; adjust it to your goal.

Gear checklist

Start with the matching format checklist. Add the organizer’s mandatory gear.

Crew & drop bags

Bring across the race name. Add confirmed access points, distances and your own arrival estimates.