Discover The Best California Ultramarathons
Explore our comprehensive list of ultramarathons in California to find the perfect race for you.
upcoming ultramarathons in California
January 10, 2026
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San Diego
February 21, 2026
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Pacifica
February 28, 2026
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San Diego
March 7, 2026
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Sacramento
March 14, 2026
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Julian
March 20, 2026
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San Rafael
March 21, 2026
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Los Angeles
March 21, 2026
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Oakland
April 4, 2026
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Walnut Creek
April 11, 2026
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Sonoma
April 12, 2026
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Napa
April 23, 2026
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Sacramento
May 9, 2026
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Berkeley
June 27, 2026
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Auburn
September 25, 2026
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Mammoth Lakes
October 8, 2026
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Big Bear Lake