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Half Marathons found in California in September

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Half Marathons in California in September 2026

Find A Race is the US's favourite event listings site. Check out our list of September 2026 Half Marathons in California below.

Race Calendar: Half Marathons found in September

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Mammoth Bar Trail Runs

Auburn, California
Sun 06 Sep 26
$52.94 - $74.14
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Mammoth Bar Trail Runs

Auburn, California
Sun 06 Sep 26
$52.94 - $74.14
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