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Ultra Races in California

Explore Ultra races in California during December 2025.

By Month

By Race Type

Ultra Categories

By City

Top Events

Calero Trail Run - Winter

Calero Trail Run - Winter

Ultra

San Jose, CA

Date TBD

12:00 AM PST

Ray Miller 50/50

Ray Miller 50/50

Ultra

Malibu, CA

Date TBD

12:00 AM PST

San Joaquin River Trail 10k/25k/50k

San Joaquin River Trail 10k/25k/50k

5K10KUltra

Friant, CA

Date TBD

6:30 AM PST

Doomsday

Doomsday

Ultra

Cool, CA

Date TBD

7:30 AM PST