0018
Ultra Marathons found in California in Spring
View all ↓Ultra Marathons in California in Spring 2026
Find A Race is the US's favourite event listings site. Check out our list of Spring 2026 Ultra Marathons in California below.
Race Calendar: Ultra Marathons found in Spring
πBoosted
Orange County Multi-Sport Festival
Mission Viejo, California
Sun 26 Apr 26
$50.60 - $272.00
πBoosted
Lake Sonoma 100K, 50K, TS Half Marathon
Geyserville, California
Sat 11 Apr 26
$117.60 - $295.00
Feature your event at the top of the results
L.A. CHINATOWN FIRECRACKER 5K/10K/KIDDIE/PAW'ER DOG RUN/WALK & BIKE RIDE
Los Angeles, California
Sat 28 Feb 26 - Sun 01 Mar 26
$13.00 - $81.00
Redwood (Spring) Trail Run
Oakland, California
Sat 21 Mar 26
Free - $85.80
VALENCIA Trail Race
Valencia, California
Sat 21 Mar 26
$91.10 - $154.70
Silver Moon Race: Kings River
Reedley, California
Sat 04 Apr 26 - Sun 05 Apr 26
$85.80 - $234.20
Bedrock Valley Trail Runs
Hemet, California
Sat 11 Apr 26 - Sun 12 Apr 26
$16.90 - $122.90
Lake Sonoma 100K, 50K, TS Half Marathon
Geyserville, California
Sat 11 Apr 26
$117.60 - $295.00
SPASM Lake Chabot Trail Run
Castro Valley, California
Sat 11 Apr 26
Free - $85.80
Badwater Salton Sea, presented by Mount to Coast
Borrego Springs, California
Sat 18 Apr 26 - Sun 19 Apr 26
$394.75
Mountains 2 Beach Marathon and Half
Ventura, California
Sat 18 Apr 26 - Sun 19 Apr 26
$22.19 - $212.99
Horseshoe Lake Trail Run
La Honda, California
Sat 18 Apr 26
Free - $85.80
Orange County Multi-Sport Festival
Mission Viejo, California
Sun 26 Apr 26
$50.60 - $272.00
Finish The Ride and Finish The Run Griffith Park
Los Angeles, California
Sat 02 May 26 - Sun 03 May 26
$11.60 - $85.80
2026 Cal Tri Ventura - 5.3.26
Ventura, California
Sun 03 May 26
$31.59 - $526.00
Grizzly Peak Trail Run
Berkeley, California
Sat 09 May 26
Free - $85.80
Cinderella Trail Run
Oakland, California
Sat 30 May 26
Free - $85.80
5.0
MS Run the US Ultra Relay
Santa Monica, California
Mon 23 Mar 26
Free
Ride 4A Reason 2026
Oakland, California
Sat 25 Apr 26
$50.00 - $100.00
Miwok 100K
Stinson Beach, California
Sat 02 May 26
$310.00 - $460.00
Showing 1-18 of 18 results