Half-Marathon races in California, United States — 2026 running calendar

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

Canoga Park, California, United States

17 Oct, 2026 (Sat)

$34.99

Running

5K 10K Half-Marathon

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

Huntington Beach, California, United States

18 Oct, 2026 (Sun)

$38.99 - $48.99

Running

5K 10K Half-Marathon

MISSION INN RUN

Riverside, California, United States

18 Oct, 2026 (Sun)

$25.00 - $85.00

Running, Walking

5K 10K Half-Marathon 2K +4

2026 - City to the Sea Half Marathon & 5K

San Luis Obispo, California, United States

18 Oct, 2026 (Sun)

$50.00 - $110.00

Running

Half-Marathon 5K

DIA DE LOS MUERTOS HALF MARATHON & 5K RUN/WALK (BAKERSFIELD)

Bakersfield, California, United States

24 Oct, 2026 (Sat)

$40.00 - $74.00

Running, Walking

Half-Marathon 5K 3.2K

RunThrough USA Long Beach 5k,10k & Half Marathon Race

Long Beach, California, United States

24 Oct, 2026 (Sat)

$42.00 - $57.75

Running

5K 10K Half-Marathon

Malibu Moves: Half Marathon, 10K, 5K, 1-Mi & 1K

Malibu, California, United States

24 Oct, 2026 (Sat) – 25 Oct, 2026

Free - $170.00

Running

10K 5K 1K Half-Marathon +8

Spooky Shuffle – 5k, 10k, Half Marathon

Van Nuys, California, United States

25 Oct, 2026 (Sun)

$24.50 - $38.50

Running

5K 10K Half-Marathon

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

Long Beach, California, United States

25 Oct, 2026 (Sun)

$38.99 - $48.99

Running

5K 10K Half-Marathon

PB&J Fuel 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

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