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Half Marathons found in California in October

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Half Marathons in California in October 2025

Find A Race is the US's favourite event listings site. Check out our list of October 2025 Half Marathons in California below.

Race Calendar: Half Marathons found in October

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Redding Breakfast Lions Turtle Bay Run 2025

Redding, California
05 Oct 25
$22.20 - $64.60
🚀Boosted

International Sloth Day Run 5K/10K/13.1 SACRAMENTO

Sacramento, California
18 Oct 25
$32.80 - $48.70
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Halloween Havoc – 5K, 10K, and Half Marathon

Fountain Valley, California
26 Oct 25
$26.97 - $41.81

Beer City Halfâ„¢ Bishop Ranch

San Ramon, California
26 Oct 25
Free - $107.00

Trick or Trot 5K, 10K, and Half Marathon

Long Beach, California
26 Oct 25
$32.79 - $42.33

Half-Marathon Training for Fun & Fitness

Grass Valley, California
20 Jul 25 - 05 Oct 25
$36.55
Showing 41-44 of 44 results
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