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Half Marathons found in California in October
View all ↓Half Marathons in California in October 2026
Find A Race is the US's favourite event listings site. Check out our list of October 2026 Half Marathons in California below.
Race Calendar: Half Marathons found in October
🚀Boosted
Halloween Trick or Trot Run 5K/10K/13.1 SACRAMENTO
Sacramento, California
Sat 31 Oct 26
$32.80 - $48.70
🚀Boosted
Champion Mine Trail Race
Nevada City, California
Sun 11 Oct 26
$38.10 - $69.90
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Mean Girls 5K, 10K & Half Marathon
Canoga Park, California
Sat 03 Oct 26
$34.99
Pacific Beach Half Marathon & 5K
San Diego
Sat 03 Oct 26 - Sun 04 Oct 26
$24.99 - $89.99
Spooky Dash 5k, 10k, 15k, Half Marathon
Long Beach, Los Angeles
Sat 03 Oct 26
$22.99 - $37.99
Peace Officer Memorial Run
Modesto, California
Sun 04 Oct 26
Free - $128.20
Judgment Day Half Marathon, 10K & 5K Run/Walk
Bakersfield, California
Sun 04 Oct 26
$43.40 - $75.20
Run by the Sea
Santa Cruz, California
Sun 04 Oct 26
$48.70 - $91.10
Hallo-Thanks-Mas Dash – 5K, 10K, and Half Marathon
San Diego, California
Sun 04 Oct 26
$31.21 - $46.05
Redding Breakfast Lions Turtle Bay Run 2026
Redding, California
Sun 04 Oct 26
$27.50 - $69.90
Bagel Run 5K/10K/13.1 SACRAMENTO
Sacramento, California
Sat 10 Oct 26
$32.80 - $48.70
Bagel Run 5K/10K/13.1 SAN FRANCISCO
San Francisco, California
Sat 10 Oct 26
$32.80 - $48.70
Bagel Run 5K/10K/13.1 LOS ANGELES
Los Angeles, California
Sat 10 Oct 26
$32.80 - $48.70
Coffee Lovers Run 5K/10K/13.1 SACRAMENTO
Sacramento, California
Sat 10 Oct 26
$32.80 - $48.70
Coffee Lovers Run 5K/10K/13.1 SAN FRANCISCO
San Francisco, California
Sat 10 Oct 26
$32.80 - $48.70
Coffee Lovers Run 5K/10K/13.1 LOS ANGELES
Los Angeles, California
Sat 10 Oct 26
$32.80 - $48.70
Bizz Johnson
Susanville, California
Sun 11 Oct 26
$69.90 - $107.00
2026 Humboldt Redwoods Marathon, Half Marathon, 5K
Weott, California
Sun 11 Oct 26
$43.65 - $112.55
Heart of Cool Trail Run
Cool, California
Sat 17 Oct 26
$32.80 - $59.30
5.0
Spooky Dam 5k, 10k, 15k, Half Marathon
Sylmar, Los Angeles
Sat 17 Oct 26
$26.99 - $40.99
Back to the Future: 88 MPH Dash 5K, 10K & Half
Canoga Park, California
Sat 17 Oct 26
$34.99
Fleet Feet Fall Classic - Trail October 18th, 2026
Chico, California
Sun 18 Oct 26
$91.10
Jeepers Creepers Marathon
Santa Clarita, Los Angeles
Sun 18 Oct 26
$165.00
Witches Wave - Halloween Run 5K, 10K, and Half Marathon by Califlow Runs
Huntington Beach, California
Sun 18 Oct 26
$16.90 - $52.93
MISSION INN RUN
Riverside, California
Sun 18 Oct 26
$28.29 - $92.34
2026 - City to the Sea Half Marathon & 5K
San Luis Obispo, California
Sun 18 Oct 26
$43.40 - $99.58
RunThrough USA Long Beach 5k,10k & Half Marathon Race
Long Beach, California
Sat 24 Oct 26
$45.52 - $62.22
Monster Dash 5k, 10k, 15k, Half Marathon
Long Beach, Los Angeles
Sat 24 Oct 26
$22.99 - $37.99
Malibu Moves: Half Marathon, 10K, 5K, 1-Mi & 1K
Malibu, California
Sat 24 Oct 26
Free - $214.55
DIA DE LOS MUERTOS HALF MARATHON & 5K RUN/WALK (BAKERSFIELD)
Bakersfield, California
Sat 24 Oct 26
$28.00 - $79.94
Trick or Trot 5K, 10K, and Half Marathon by Califlow Runs
Long Beach, California
Sun 25 Oct 26
$16.90 - $52.93
Spooky Shuffle – 5k, 10k, Half Marathon
Van Nuys, California
Sun 25 Oct 26
$26.97 - $41.81
Halloween Trick or Trot Run 5K/10K/13.1 LOS ANGELES
Los Angeles, California
Sat 31 Oct 26
$32.80 - $48.70
The Long Beach Halloween Run 5K. 10K. Half Marathon by Califlow Runs
Long Beach, California
Sat 31 Oct 26
$42.33 - $57.17
Halloween Trick or Trot Run 5K/10K/13.1 SACRAMENTO
Sacramento, California
Sat 31 Oct 26
$32.80 - $48.70
Halloween Trick or Trot Run 5K/10K/13.1 SAN FRANCISCO
San Francisco, California
Sat 31 Oct 26
$32.80 - $48.70
ZombieRunner Halloween
San Jose, California
Sat 31 Oct 26
Free - $85.80
Happy Halloween 5k, 10k, 15k, Half Marathon
Long Beach, Los Angeles
Sat 31 Oct 26
$23.99 - $37.99
PB&J Fuel Run 5K/10K/13.1 SACRAMENTO
Sacramento, California
Sat 31 Oct 26
$32.80 - $48.70
PB&J Fuel Run 5K/10K/13.1 SAN FRANCISCO
San Francisco, California
Sat 31 Oct 26
$32.80 - $48.70
PB&J Fuel Run 5K/10K/13.1 LOS ANGELES
Los Angeles, California
Sat 31 Oct 26
$32.80 - $48.70
Pinkathon 2026 Virtual and In-Person Challenge for Breast Cancer!
Any Place in the World!, California
Mon 01 Jun 26 - Sat 31 Oct 26
Free - $27.50
Showing 1-40 of 42 results
