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

Oct

31

PB&J Fuel Run 5K/10K/13.1 SACRAMENTO

Sacramento, California, United States

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

Oct

31

PB&J Fuel Run 5K/10K/13.1 SAN DIEGO

San Diego, California, United States

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

Oct

31

Boo Run 5k & 10k

Porterville, California, United States

$55.00 - $58.00

Running

5K 10K

Oct

31

Halloween Trick or Trot Run 5K/10K/13.1 SAN FRANCISCO

San Francisco, California, United States

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

Oct

31

Restless Soles

Walnut Creek, California, United States

$30.00

Running

9.7K

Oct

31

Monster Mash Dash and Zombie Zoom

Merced, California, United States

$20.00 - $55.00

Running

Zoom Zoom (400 m) 5K 10K

Oct

31

ZombieRunner Halloween

San Jose, California, United States

Free - $80.00

Trail running Running

5K 10K Half-Marathon Marathon +6

Nov

01

Halloween Leftovers – 5K, 10K, 10-Miler, Half Marathon

Long Beach, California, United States

$24.50 - $38.50

Running

5K 10K 16.1K Half-Marathon

Nov

01

2026 Optimism Cal Tri Newport Dunes - 11.1.26

Newport Beach, California, United States

$53.86 - $178.86

Triathlon Running Swimming

Ultra 4.8K 1.5K 9.7K

Nov

01

Two Cities Marathon

Fresno, California, United States

$65.00 - $160.00

Running

Marathon Half-Marathon 10K 5K

Nov

01

DINO DASH

Tustin, California, United States

Free - $50.00

Running Cycling

2K 5K 10K 15K +2

Nov

01

Día de Muertos - Viva la Vida - 5K, 10K, and Half Marathon by Califlow Runs

Long Beach, California, United States

$25.00 - $58.99

Running

5K 10K Half-Marathon 1.6K