Cahuilla Rez Ultra

Cahuilla Rez Ultra

Cahuilla Rez Ultra is a multi format running event held on the Cahuilla Indian Reservation in Anza, California. The event is a fundraiser for the Cahuilla Band of Indians Youth and Family Committee and includes opportunities to learn about Cahuilla culture and history while running in a mountain desert climate.

Races use a runnable two mile loop on double track dirt road. The loop has about 170 feet of elevation gain per circuit; the 100 mile course accumulates approximately 8,500 feet of gain with subtle rolling hills. The half marathon covers roughly 13 miles of reservation roads with about 1,500 feet of climb and includes four basic aid stations at miles 4.5, 6, 7.5 and 10. A main aid station at the softball field provides hot and real foods and real non porta potty bathrooms.

Event logistics note that RV parking is allowed at no additional cost but limited to 20 spots on a first come first served basis. Tent camping on the softball field and car camping in the adjacent dirt lot are permitted; half marathon entrants are not provided overnight camping to preserve space for fixed time participants. The 100 mile race shares the same loop as the fixed time races and has a 30 hour cutoff.

Rules for 2026 state that official results are limited to the distance completed in the entered race. There are no mid race changes between race categories after registration closes.

Most participants receive a race shirt in pre race materials and a medal upon completion. Top finishers receive hand crafted awards. 100 mile finishers receive a buckle; buckles are limited to those who registered early and may be mailed after the event. 5k participants do not receive a shirt but do receive a buckle. Visit the organization's website for the most recent information.