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Ultra Marathons found in California
View all ↓Ultra Marathons in California 2026 - 2027
The most comprehensive list of Ultra Marathons in and near California in 2026 - 2027. Find your perfect race!
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Race Calendar: Ultra Marathons found in California
🚀Boosted
2026 Cal Tri LA - 10.18.26
Playa Del Rey, California
Sun 18 Oct 26
Free - $526.00
🚀Boosted
FOURmidable
Auburn, California
Sat 20 Feb 27
$43.40 - $85.80
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Miwok 100K
Stinson Beach, California
Sat 20 Dec 25 - Sat 02 May 26
$150.00 - $460.00
Run4Kids Ultra Running Party
Corona, California
Fri 17 Apr 26 - Sat 18 Apr 26
$84.74 - $211.94
Mountains 2 Beach Marathon and Half
Ventura, California
Sat 18 Apr 26 - Sun 19 Apr 26
$28.55 - $289.74
Horseshoe Lake Trail Run
La Honda, California
Sat 18 Apr 26
Free - $96.40
2026 Granfondo San Diego
San Diego, California
Sun 19 Apr 26
$98.85 - $277.96
Millerton Lake Crows Nest Triathlon, 5k & 10k
Friant, California
Sun 19 Apr 26
$49.20 - $1,051.50
Ride 4A Reason 2026
Oakland, California
Sat 25 Apr 26
$100.00 - $175.00
Orange County Multi-Sport Festival
Mission Viejo, California
Sun 26 Apr 26
$72.20 - $336.80
Grapes of Wrath Triathlon, 5k & 10k
Delano, California
Sun 26 Apr 26
$55.00 - $220.00
Finish The Ride and Finish The Run Griffith Park
Los Angeles, California
Sat 02 May 26
$16.90 - $101.70
Santa Clarita Trail Race
Santa Clarita, California
Sat 02 May 26
$43.40 - $213.00
2026 Cal Tri Ventura - 5.3.26
Ventura, California
Sun 03 May 26
$58.09 - $526.00
Suvidha International In-Person and Virtual 5K
Folsom, California
Sat 09 May 26 - Sun 31 May 26
$22.20
Grizzly Peak Trail Run
Berkeley, California
Sat 09 May 26
Free - $96.40
Cinderella Trail Run
Oakland, California
Sat 30 May 26
Free - $96.40
5.0
Eastern Sierra Double Century
Bishop, California
Sat 30 May 26
$186.18
Shadow of the Giants 50k & 20k Run
Fish Camp, California
Sat 06 Jun 26
$96.40 - $154.70
Huntington Lake Triathlon, 5k & 10k
Lakeshore, California
Sat 20 Jun 26
$54.50 - $1,051.50
San Lorenzo River Trail Run
Santa Cruz, California
Sat 11 Jul 26
Free - $96.40
San Francisco Marathon
San Francisco
Sat 25 Jul 26 - Sun 26 Jul 26
$77.19 - $421.57
Redwood (Summer) Trail Run
Oakland, California
Sat 15 Aug 26
Free - $96.40
SPASM Crystal Springs Trail Run
Woodside, California
Sun 30 Aug 26
Free - $96.40
Diablo Trail Run
Clayton, California
Sun 06 Sep 26
Free - $96.40
Shaver Lake Mile High Triathlon
Shaver Lake, California
Sun 13 Sep 26
$59.80 - $1,051.50
Mile Madness Endurance Run
Auburn, California
Fri 18 Sep 26 - Mon 21 Sep 26
$137.74 - $472.45
Hill Valley 88 Miler ™
Hill Valley, California
Wed 23 Sep 26 - Wed 21 Oct 26
$17.50 - $93.28
JP's Backyard Ultra/Hike, The Final Edition
Napa, California
Sat 26 Sep 26
Free
Saddle2Surf
Norco, California
Sun 04 Oct 26
$80.50 - $160.00
Ruth Anderson Memorial Endurance Run
San Francisco, California
Sat 10 Oct 26
Free
Lake Hodges Trail Festival
San Diego, California
Sat 17 Oct 26 - Sun 18 Oct 26
$16.90 - $117.60
The Jackalope Lope
Redding, California
Sat 17 Oct 26
$69.90 - $96.40
Lake Evans Triathlon, 5k & 10k
Bakersfield, California
Sun 18 Oct 26
$49.20 - $1,051.50
2026 Cal Tri LA - 10.18.26
Playa Del Rey, California
Sun 18 Oct 26
Free - $526.00
Finish The Ride and Finish The Run Santa Clarita
Valencia, California
Sun 25 Oct 26
$11.60 - $96.40
2026 Optimism Cal Tri Newport Dunes - 11.1.26
Newport Beach, California
Sun 01 Nov 26
$36.89 - $788.50
Lake Chabot Trail Run
Castro Valley, California
Sat 07 Nov 26
Free - $96.40
San Joaquin River Trail 10k/25k/50k
Friant, California
Sat 05 Dec 26
$48.70 - $133.50
New Year's One Day
San Jose, California
Thu 31 Dec 26
$96.40 - $218.30
San Diego 50 & Trail Runs
Escondido, California
Sat 09 Jan 27
$16.90 - $144.10
Avalon Benefit 50 Mile/50K Run
Avalon, California
Sat 09 Jan 27
$178.25 - $406.10
Showing 1-40 of 49 results
