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Ultra Marathons found in California in May

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Ultra Marathons in California in May 2026

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

Race Calendar: Ultra Marathons found in May

🚀Boosted

Cinderella Trail Run

Oakland, California
30 May 26
Free - $85.80
5.0
🚀Boosted

2026 Cal Tri Ventura - 5.3.26

Ventura, California
03 May 26
$26.29 - $526.00
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Finish The Ride and Finish The Run Griffith Park

Los Angeles, California
02 May 26 - 03 May 26
$11.60 - $85.80

2026 Cal Tri Ventura - 5.3.26

Ventura, California
03 May 26
$26.29 - $526.00

Grizzly Peak Trail Run

Berkeley, California
09 May 26
Free - $85.80

Cinderella Trail Run

Oakland, California
30 May 26
Free - $85.80
5.0
Showing 1-4 of 4 results