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Ultra Marathons found in California in Summer

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Ultra Marathons in California in Summer 2026

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

Race Calendar: Ultra Marathons found in Summer

🚀Boosted

San Lorenzo River Trail Run

Santa Cruz, California
Sat 11 Jul 26
Free - $85.80
🚀Boosted

Shadow of the Giants 50k & 20k Run

Fish Camp, California
Sat 06 Jun 26
$85.80 - $138.80
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Shadow of the Giants 50k & 20k Run

Fish Camp, California
Sat 06 Jun 26
$85.80 - $138.80

San Lorenzo River Trail Run

Santa Cruz, California
Sat 11 Jul 26
Free - $85.80

San Francisco Marathon

San Francisco
Sat 25 Jul 26 - Sun 26 Jul 26
$77.19 - $421.57
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