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Ultra Marathons found in California in October

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Ultra Marathons in California in October 2025

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

Race Calendar: Ultra Marathons found in October

πŸš€Boosted

OC United 2025 Pumpkin Run/Walk & Bike

Fullerton, California
Sat 25 Oct 25
$20.00 - $50.00
πŸš€Boosted

The Jackalope Lope

Redding, California
Sat 18 Oct 25
$91.10 - $117.60
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Pinkathon 2025 Virtual and In-Person Challenge for Breast Cancer!

Any Place in the World!, California
Thu 01 May 25 - Fri 31 Oct 25
Free - $27.50

Ruth Anderson Memorial Endurance Run

San Francisco, California
Sat 11 Oct 25
Free

Lake Evans Triathlon, 5k & 10k

Bakersfield, California
Sat 18 Oct 25
$49.20 - $1,051.50

The Jackalope Lope

Redding, California
Sat 18 Oct 25
$91.10 - $117.60

Lake Hodges Trail Festival

San Diego, California
Sat 18 Oct 25 - Sun 19 Oct 25
$16.90 - $154.70

Cycle of Hope

Dublin, California
Sun 19 Oct 25
Free - $160.00

2025 Cal Tri LA - 10.19.25

Playa Del Rey, California
Sun 19 Oct 25
Free - $526.00

OC United 2025 Pumpkin Run/Walk & Bike

Fullerton, California
Sat 25 Oct 25
$20.00 - $50.00

Finish The Ride and Finish The Run Santa Clarita

Valencia, California
Sun 26 Oct 25
$16.90 - $112.30

Tahoe to Malibu Annual Challenge

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

5th Annual Dia de los Muertos 75 Mile Challenge!

livermore, California
Sat 13 Sep 25 - Sun 02 Nov 25
$32.80 - $54.00
Showing 1-11 of 11 results