Discover The Best California Ultramarathons
Explore our comprehensive list of ultramarathons in California to find the perfect race for you.
upcoming ultramarathons in California
April 4, 2026
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Folsom
April 4, 2026
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Walnut Creek
April 11, 2026
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Geyserville
April 11, 2026
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April 12, 2026
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Napa
April 18, 2026
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April 18, 2026
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April 18, 2026
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San Jose
April 23, 2026
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Sacramento
May 2, 2026
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San Jose
May 2, 2026
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Santa Clarita
May 9, 2026
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Berkeley
May 30, 2026
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Oakland
May 30, 2026
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Bishop
June 6, 2026
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June 6, 2026
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June 20, 2026
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San Diego
June 27, 2026
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Auburn
July 11, 2026
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Santa Cruz
August 2, 2026
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Castro Valley
August 15, 2026
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Oakland
September 6, 2026
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Walnut Creek
September 11, 2026
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Mendocino
September 12, 2026
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Berkeley
September 25, 2026
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Mammoth Lakes