Cahuilla Rez Ultra
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Cahuilla Rez Ultra
The Cahuilla Rez Ultra takes place on the Cahuilla Indian Reservation in Anza, California. The event is a fundraiser for the tribe's Youth and Family Programming; 100 percent of funds not used for race operations go to the Cahuilla Band of Indians Youth and Family Committee. As of 2026 the organizer, Red Road Racing, is a registered 501c3 nonprofit.
Races use a runnable 2 mile loop on double track dirt road. The loop gains about 170 feet and the 100 mile course accumulates approximately 8,500 feet of ascent. Aid is centered at the softball field and includes hot foods and typical aid station items; real restroom facilities are provided rather than only porta potties.
Camping and parking options include up to 20 free RV spots, tent camping on the softball field, and car camping in the adjacent dirt lot. Half marathon runners are not offered overnight camping to preserve space for 24 hour participants. The half marathon covers 13 miles on reservation roads, includes roughly 1,500 feet of climb, and has four aid stations at approximately miles 4.5, 6, 7.5 and 10.
Official race rules for 2026 state that fixed-time events record the mileage completed within the entered race and that no mid race changes between race categories are allowed. 100 mile finishers receive a custom buckle; buckles are ordered by signup date and may be mailed after the event. Visit the organization's website for the most recent information.
