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Half Marathons found in California in September
View all ↓Half Marathons in California in September 2025
Find A Race is the US's favourite event listings site. Check out our list of September 2025 Half Marathons in California below.
Race Calendar: Half Marathons found in September
Teaching & Learning Collaborative Charity Group Registration (2025 Disneyland Halloween Half Marathon Weekend )
Anaheim, California
05 Sep 25 - 07 Sep 25
$34.29 - $1,893.80
Disneyland Halloween Half Marathon Weekend 2025
Anaheim, California
05 Sep 25 - 11 Sep 25
$138.80 - $284.50
Mammoth Bar Trail Runs
Auburn, California
07 Sep 25
$40.67 - $71.57
Diablo Trail Run
Clayton, California
07 Sep 25
Free - $85.80
Earth and Sky Fall Equinox Run 5K, 10k, & Half Marathon
Santa Monica, California
13 Sep 25
$32.79 - $42.33
Pirates Plunder 5K, 10K, and Half Marathon
Santa Monica, California
14 Sep 25
$26.97 - $41.81
Oh my Gourd - Falling for Miles 5K, 10K, & Half Marathon
Long Beach, California
14 Sep 25
$32.79 - $42.33
Harvest Moon 5K, 10k, and Half Marathon
Santa Monica, California
20 Sep 25
$26.97 - $41.81
Rocky Ridge 2025
San Ramon, California
20 Sep 25
Booty Dash: A Race for the Gold - Pirate Run 5K, 10K, & Half Marathon
Long Beach, California
20 Sep 25
$32.79 - $42.33
Run with the Pack - Harvest Moon Run 5K, 10K, & Half Marathon
Santa Monica, California
21 Sep 25
$32.79 - $42.33
Jurassic Jaunt 5K, 10K, 10-Miler, and Half Marathon
Long Beach, California
21 Sep 25
$26.97 - $41.81
San Diego Holiday Half Marathon
San Diego, California
14 Dec 24 - 20 Dec 25
$85.93 - $160.66
Pinkathon 2025 Virtual and In-Person Challenge for Breast Cancer!
Any Place in the World!, California
01 May 25 - 31 Oct 25
Free - $27.50
Showing 1-14 of 14 results