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Marathons found in California in December

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Marathons in California in December 2025

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

Race Calendar: Marathons found in December

🚀Boosted

Run Against Breast Cancer 5K/10K/13.1 LOS ANGELES

Santa Monica, California
13 Dec 25
$32.80 - $48.70
🚀Boosted

Run for Mental Health 5K/10K/13.1 LOS ANGELES

Los Angeles, California
13 Dec 25
$32.80 - $48.70
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Run Against Breast Cancer 5K/10K/13.1 LOS ANGELES

Santa Monica, California
13 Dec 25
$32.80 - $48.70

Run for Mental Health 5K/10K/13.1 LOS ANGELES

Los Angeles, California
13 Dec 25
$32.80 - $48.70
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