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

Nov

26

The Wild Turkey

Granite Bay, California, United States

Free - $38.00

Trail running Running

5K 10K 1K

Jan

01

Auburn Resolution Run

Auburn, California, United States

$35.00 - $55.00

Trail running Running

5K 10K 16.1K

Feb

06

Dalton Canyon Ultra

Glendora, California, United States

$65.00 - $125.00

Trail running

Ultra 10K

Feb

20

Montara Mountain Trail Run

Pacifica, California, United States

Free - $90.00

Trail running Running

10K Half-Marathon 33.3K Marathon +3

Mar

13

Zoom San Francisco

San Francisco, California, United States

Free - $70.00

Trail running Running

5K 10K Half-Marathon 3.2K +4

Mar

13

Catalina Island Marathon, 10K, 5K

Avalon, California, United States

$25.00 - $396.00

Trail running Running

Marathon 10K 5K 1K +1

Mar

20

VALENCIA Trail Race

Valencia, California, United States

$87.00 - $167.00

Trail running

Ultra Half-Marathon 10K

Apr

03

Bedrock Valley Trail Runs

Hemet, California, United States

$15.00 - $115.00

Trail running Running Cycling

Marathon Half-Marathon 15K 10K +9

Apr

10

Nature Made Great Race: Half Marathon, 5K, 10K, 15K, 10M, 1M

Agoura Hills, California, United States

$33.49 - $92.45

Trail running Running

Half-Marathon 10K 16.6K 15K +3

Apr

24

No Foolin' Foot Race

San Carlos, California, United States

$20.00 - $65.00

Trail running

15K 10K 5K 1K

May

01

Santa Clarita Trail Race

Santa Clarita, California, United States

$45.00 - $170.00

Trail running

5K 10K 15K 30K +4

May

08

Grizzly Peak Trail Run

Berkeley, California, United States

Free - $90.00

Trail running Running

10K Half-Marathon 30K Marathon +3