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

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

San Diego, California, United States

31 Oct, 2026 (Sat)

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

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

Sacramento, California, United States

31 Oct, 2026 (Sat)

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

ZombieRunner Halloween

San Jose, California, United States

31 Oct, 2026 (Sat)

Free - $80.00

Trail running, Running

5K 10K Half-Marathon Marathon +6

PB&J Fuel Run 5K/10K/13.1 LOS ANGELES

Los Angeles, California, United States

31 Oct, 2026 (Sat)

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

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

Long Beach, California, United States

31 Oct, 2026 (Sat)

$46.99 - $58.99

Running

5K 10K Half-Marathon

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

San Francisco, California, United States

31 Oct, 2026 (Sat)

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

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

San Diego, California, United States

31 Oct, 2026 (Sat)

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

2026 Optimism Cal Tri Newport Dunes - 11.1.26

Newport Beach, California, United States

01 Nov, 2026 (Sun)

$43.86 - $153.86

Triathlon, Running, Swimming

Ultra 4.8K 1.5K 9.7K

Two Cities Marathon

Fresno, California, United States

01 Nov, 2026 (Sun)

$55.00 - $130.00

Running

Marathon Half-Marathon 10K 5K

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

Long Beach, California, United States

01 Nov, 2026 (Sun)

$25.00 - $58.99

Running

5K 10K Half-Marathon 1.6K

DINO DASH

Tustin, California, United States

01 Nov, 2026 (Sun)

Free - $35.00

Running, Cycling

2K 5K 10K 15K +2

Almond Bowl 5K & 10K November 1st, 2026

Chico, California, United States

01 Nov, 2026 (Sun)

$45.00 - $55.00

Running

5K 10K