Race Discovery

10K races in California, United States — 2026 trail running calendar

30 events found

The Honey Badger Half (& 10K/5K) logo
Sep
11

The Honey Badger Half (& 10K/5K)

Santa Venetia, California, United States
Running Trail running
5K 10K Half-Marathon +2
Mammoth Bar Trail Runs logo
Sep
06

Mammoth Bar Trail Runs

Auburn, California, United States
Trail running
Half-Marathon 10K
SPASM Crystal Springs Trail Run logo
Aug
29

SPASM Crystal Springs Trail Run

Woodside, California, United States
Trail running Running
10K Half-Marathon 35.4K Marathon +2
Santa Cruz Trail Run logo
Aug
22

Santa Cruz Trail Run

Felton, California, United States
Trail running
29.3K Half-Marathon 10K
SAR Wild Run logo
Aug
09

SAR Wild Run

Shaver Lake, California, United States
Trail running
Half-Marathon 10K 5K 3.2K
The Rock the Loch 5K/10K/Half Marathon (LIVE or Virtual) logo
Jun
26

The Rock the Loch 5K/10K/Half Marathon (LIVE or Virtual)

Castro Valley, California, United States
Running Trail running
5K 10K Half-Marathon +2