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

Oct

25

Trick or Trot 5K, 10K, and Half Marathon by Califlow Runs

Long Beach, California, United States

$48.99 - $52.99

Running

5K 10K Half-Marathon

Oct

25

2026 Winters Spooktacular Fun Run and Costume Contest

Winters, California, United States

$20.00 - $45.00

Running

1.6K 5K 10K +2

Oct

25

Alhambra Pumpkin Run

Alhambra, California, United States

$50.00 - $70.00

Running

10K 5K Kiddie Run (Ages 4-5) 1K

Oct

31

Run For The Brains!

Stockton, California, United States

$15.00 - $50.00

Walking Running

1K 5K 10K +1

Oct

31

Halloween Trick or Trot 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 FRANCISCO

San Francisco, California, United States

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

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

The Long Beach Halloween Run 5K. 10K. Half Marathon by Califlow Runs

Long Beach, California, United States

$48.99 - $62.99

Running

5K 10K Half-Marathon

Oct

31

Halloween Trick or Trot Run 5K/10K/13.1 LOS ANGELES

Los Angeles, 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 LOS ANGELES

Los Angeles, California, United States

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

Oct

31

Halloween Trick or Trot 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

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