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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

Santa To The Sea 1/2 Marathon, 1/4 Marathon & 5K

Oxnard, California
13 Dec 25 - 14 Dec 25
$11.60 - $117.59
🚀Boosted

Running Fence Run - Celebrating Christo & Jeanne-Claude's "Running Fence" temporary art project - a 24.5-mile fabric fence in Sonoma & Marin Counties installed in September 1976

Cotati, California
04 Jul 25 - 12 Sep 26
Free - $250.00
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Running Fence Run - Celebrating Christo & Jeanne-Claude's "Running Fence" temporary art project - a 24.5-mile fabric fence in Sonoma & Marin Counties installed in September 1976

Cotati, California
04 Jul 25 - 12 Sep 26
Free - $250.00

ZombieRunner Quarry Lakes

Fremont, California
06 Dec 25
Free - $80.50

Santa To The Sea 1/2 Marathon, 1/4 Marathon & 5K

Oxnard, California
13 Dec 25 - 14 Dec 25
$11.60 - $117.59
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