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

Oct

17

Springville Apple Run

Springville, California, United States

$15.00 - $40.00

Running Walking

5K 10K 3.2K 1K

Oct

17

Night of the Living Runners – 5K, 10K, 10-Miler, Half Marathon

Long Beach, California, United States

$24.50 - $38.50

Running

5K 10K 16.1K Half-Marathon

Oct

17

The Ruck Challenge

Norco, California, United States

$60.00 - $150.00

Running

5K 10K

Oct

17

Pomona 5K & 10K

Pomona, California, United States

$25.00 - $60.00

Running

5K 10K 15K 0.4K +3

Oct

17

Back to the Future: 88 MPH Dash 5K, 10K & Half

Canoga Park, California, United States

$34.99

Running

5K 10K Half-Marathon

Oct

17

Infinite Challenge Run

San Pedro, California, United States

$95.00 - $110.00

Running

5K 10K

Oct

17

Lake Hodges Trail Festival

San Diego, California, United States

$15.00 - $145.00

Trail running Running Duathlon

50K 25.1K 15K 10.3K +7

Oct

18

MISSION INN RUN

Riverside, California, United States

$25.00 - $95.00

Running Walking

5K 10K Half-Marathon 2K +4

Oct

18

Witches Wave - Halloween Run 5K, 10K, and Half Marathon by Califlow Runs

Huntington Beach, California, United States

$38.99 - $48.99

Running

5K 10K Half-Marathon

Oct

18

Lake Evans Triathlon, 5k & 10k

Bakersfield, California, United States

$50.00 - $240.00

Triathlon Aquabike Swimrun Duathlon Running

23.7K 48.4K 18.7K 5.3K +12

Oct

18

2026 Cal Tri LA - 10.18.26

Playa Del Rey, California, United States

Free - $153.86

Triathlon Running Swimming

Ultra 5K 1.5K 10K +1

Oct

24

Big Sur River Run

Big Sur, California, United States

$20.00 - $65.00

Running

5K 10K