May ultra marathons in California, United States
25 races
Coyote Two Moon
May 1, 2026 (Fri)
Ojai, California, United States
2.3 - 2.8
$184.55 - $386.9
Run4Kids 24 Hour Running Party
May 1-2, 2026 (Fri-Sat)
Corona, California, United States
$129 - $149
Folsom Lake Trail Run
May 2, 2026 (Sat)
Folsom, California, United States
$147.27
Hollywood to the Sea
May 2, 2026 (Sat)
Los Angeles, California, United States
2.4
$700
Miwok
May 2, 2026 (Sat)
Stinson Beach, California, United States
2.2
Hacienda Hills Trail Run
May 2, 2026 (Sat)
San Jose, California, United States
$131
Costa Rica 200
May 4, 2026 (Mon)
San Jose, California, United States
Quicksilver
May 9, 2026 (Sat)
San Jose, California, United States
1.3 - 2.2
$152.6 - $205.85
Trail Run at Sly Park
May 9, 2026 (Sat)
Pollock Pines, California, United States
1.2
$131.3
Pct 50
May 9, 2026 (Sat)
San Diego, California, United States
1.8
$200.52
Grizzly Peak
May 9, 2026 (Sat)
Contra Costa County, California, United States
1.3
Paiute Meadows Trail Run
May 9, 2026 (Sat)
Susanville, California, United States
$103.43
John Wayne Grit Series - Newport Coast
May 9, 2026 (Sat)
Laguna Beach, California, United States
Born to Run Ultra Marathons
May 13-16, 2026 (Wed-Sat)
Los Olivos, California, United States
2.5
$429.5 - $642.5
Napa Wilderness Trail Runs
May 16, 2026 (Sat)
Napa, California, United States
1.4 - 1.7
$151.53 - $162.18
Placer Trail Running Festival
May 16, 2026 (Sat)
Granite Bay, California, United States
Run for Amma
May 16, 2026 (Sat)
Los Gatos, California, United States
1.2
O'Neill Park Trail Races
May 16, 2026 (Sat)
Trabuco Canyon, California, United States
1.2
$179.22
Bishop High Sierra
May 16, 2026 (Sat)
Bishop, California, United States
1.2 - 2
$184.55 - $259.1
Proctor Valley Monster Endurance Run
May 16, 2026 (Sat)
Chula Vista, California, United States
1.7
$100
Corral Canyon Trail Scramble
May 16, 2026 (Sat)
Campo, California, United States
1.2
Nanny Goat
May 23, 2026 (Sat)
Riverside, California, United States
2.5
Calero Trail Run
May 30, 2026 (Sat)
San Jose, California, United States
1.4
Sonoma Coast Trail Runs
May 30, 2026 (Sat)
Duncans Mills, California, United States
1.5
$119
Eastern Sierra Double Century
May 30, 2026 (Sat)
Bishop, California, United States
$200
Showing 1 - 25 of 25 events