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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
🚀Boosted
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
🚀Boosted
Bayside Saved by the Bell 5K, 10K & Half Marathon
Canoga Park, California
20 Sep 25
$34.99
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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
Long Beach, CA Galloway Training Program
Long Beach, California
07 Jun 25 - 04 Oct 25
$100.00 - $120.00
Half-Marathon Training for Fun & Fitness
Grass Valley, California
20 Jul 25 - 05 Oct 25
$36.55
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
Diablo Trail Run
Clayton, California
07 Sep 25
Free - $85.80
Mammoth Bar Trail Runs
Auburn, California
07 Sep 25
$52.94 - $84.74
National Chocolate Day: Run for Chocolates SAN DIEGO
San Diego, California
13 Sep 25
$32.80 - $48.70
Hedgehog Dash 5K/10K/13.1 LOS ANGELES
Los Angeles, California
13 Sep 25
$32.80 - $48.70
Hedgehog Dash 5K/10K/13.1 SAN DIEGO
San Diego, California
13 Sep 25
$32.80 - $48.70
National Chocolate Day: Run for Chocolates SACRAMENTO
Sacramento, California
13 Sep 25
$32.80 - $48.70
Earth and Sky Fall Equinox Run 5K, 10k, & Half Marathon
Santa Monica, California
13 Sep 25
$32.79 - $42.33
National Chocolate Day: Run for Chocolates SAN FRANCISCO
San Francisco, California
13 Sep 25
$32.80 - $48.70
National Chocolate Day: Run for Chocolates LOS ANGELES
Los Angeles, California
13 Sep 25
$32.80 - $48.70
Hedgehog Dash 5K/10K/13.1 SACRAMENTO
Sacramento, California
13 Sep 25
$32.80 - $48.70
Runvana: A Totally 90s Grunge Run 5K, 10K, Half Marathon
Long Beach, California
13 Sep 25
$35.97 - $46.57
Hedgehog Dash 5K/10K/13.1 SAN FRANCISCO
San Francisco, California
13 Sep 25
$32.80 - $48.70
Totally 80's Fast Times in Huntington Beach 5K, 10K, & Half Marathon
Huntington Beach, California
14 Sep 25
$11.60 - $52.93
Pirates Plunder – 5K, 10K, 10-miler, and Half Marathon
Long Beach, 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
The Great American Pizza Run
Long Beach, California
20 Sep 25
$11.60 - $46.57
Harvest Moon Trot – 5K, 10k, and Half Marathon
Santa Monica, California
20 Sep 25
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
Bayside Saved by the Bell 5K, 10K & Half Marathon
Canoga Park, California
20 Sep 25
$34.99
Jurassic Jaunt – 5K, 10K, 10M, and Half Marathon
Long Beach, California
21 Sep 25
$26.97 - $41.81
Run with the Pack - Harvest Moon Run 5K, 10K
Santa Monica, California
21 Sep 25
$32.79 - $42.33
Alameda Island Running Festival
Alameda, California
21 Sep 25
$48.70 - $107.00
National Singles Day: Singles & Friends Running Club LOS ANGELES
Los Angeles, California
27 Sep 25
$32.80 - $48.70
National Singles Day: Singles & Friends Running Club SACRAMENTO
Sacramento, California
27 Sep 25
$32.80 - $48.70
National Coffee Day: Run for Coffee SACRAMENTO
Sacramento, California
27 Sep 25
$32.80 - $48.70
National Coffee Day: Run for Coffee SAN DIEGO
San Diego, California
27 Sep 25
$32.80 - $48.70
National Singles Day: Singles & Friends Running Club SAN DIEGO
San Diego, California
27 Sep 25
$32.80 - $48.70
National Coffee Day: Run for Coffee LOS ANGELES
Los Angeles, California
27 Sep 25
$32.80 - $48.70
Showing 1-34 of 34 results
