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Ultra Marathons found in California in May

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Ultra Marathons in California in May 2025

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

Race Calendar: Ultra Marathons found in May

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Pinkathon 2025 Virtual and In-Person Challenge for Breast Cancer!

Any Place in the World!, California
01 May 25 - 31 Oct 25
Free - $27.50
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Eastern Sierra Double Century

Bishop, California
31 May 25
$176.55
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Run4Kids Ultra Running Party

Corona, California
02 May 25 - 03 May 25
$84.74 - $158.94

Hollywood to the Sea

Los Angeles, California
03 May 25
$700.00

Grizzly Peak Trail Run

Berkeley, California
10 May 25
Free - $85.80

Proctor Valley Monster Endurance Run

Chula Vista, California
17 May 25
$62.30 - $103.50

Eastern Sierra Double Century

Bishop, California
31 May 25
$176.55

Malibu to Tahoe Annual Challenge

Anywhere, California
01 Jan 24 - 31 Dec 25
$53.75

Miwok 100K

Stinson Beach, California
06 Jan 25 - 03 May 25
$150.00 - $450.00

Pinkathon 2025 Virtual and In-Person Challenge for Breast Cancer!

Any Place in the World!, California
01 May 25 - 31 Oct 25
Free - $27.50
Showing 1-8 of 8 results