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Ultra Marathons found in California in Winter

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Ultra Marathons in California in Winter 2025/26

Find A Race is the US's favourite event listings site. Check out our list of Winter 2025/26 Ultra Marathons in California below.

Race Calendar: Ultra Marathons found in Winter

🚀Boosted

Malibu to Tahoe Annual Challenge

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

9th Annual BRAVE Race 2026

Aliso Viejo, California
22 Feb 26
Free - $56.00
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San Joaquin River Trail 10k/25k/50k

Friant, California
06 Dec 25
$48.70 - $133.50

New Year's One Day

San Jose, California
31 Dec 25 - 01 Jan 26
$85.80 - $197.10

Avalon Benefit 50 Mile/50K Run

Avalon, California
10 Jan 26
$99.40 - $304.25

San Diego 50 & Trail Runs

Escondido, California
10 Jan 26
$16.90 - $144.10

9th Annual BRAVE Race 2026

Aliso Viejo, California
22 Feb 26
Free - $56.00

Malibu to Tahoe Annual Challenge

Anywhere, California
01 Jan 24 - 31 Dec 25
$53.75
Showing 1-6 of 6 results