100 mile races in Arizona

The 12 100 mile ultramarathons in Arizona, with each one's climb, cutoff and date. Every race links to its own page, where you can see how it fits the runner you are now.

Race	Distance	Where	Date	Climb	Cutoff
Mogollon Monster 100 Mile	100 Miles	Pine, AZ	Sep 12, 2026	15,900 ft	38 h
Flagstaff to Grand Canyon Stagecoach Line	100 Miles	Flagstaff, AZ	Sep 19, 2026	5,837 ft	31.5 h
Saddles 100	100 Miles	Prescott, AZ	Oct 3, 2026	12,867 ft	34 h
Javelina Jundred Endurance Run	100 Miles	Fountain Hills, AZ	Oct 31, 2026	5,200 ft	30 h
Route 66 UltraRun: Solo and Team Relay Divisions	100 Miles (Crewed)	Seligman, AZ	Nov 14, 2026	—	48 h
Fat Ox Run	100 Miles	Goodyear, AZ	Nov 20, 2026	—	47 h
Desert Solstice	100 Miles	Phoenix, AZ	Dec 19, 2026	—	24 h
Across the Years	100 Miles	Peoria, AZ	Dec 28, 2026	2,300 ft	72 h
Coldwater Hundred	100 Miles	Goodyear, AZ	Jan 16, 2027	8,600 ft	32 h
Grandmaster Ultras	100 Miles	Littlefield, AZ	Feb 26, 2027	3,888 ft	48 h
El Jefe 100	100 Miles	Superior, AZ	Apr 3, 2027	12,548 ft	36 h
Bradshaw Brute	100 Miles	Black Canyon City, AZ	May 3, 2027	20,838 ft	38 h