12hr may ultra marathons
52 races
Run4Kids 24 Hour Running Party
May 1-2, 2026 (Fri-Sat)
Corona, California, United States
$129 - $149
El Gato Rebelde Ultra 12-Hour
May 2, 2026 (Sat)
Surfside, Florida, United States
$117.45 - $151.64
Hills Creek Endurance Challenge
May 2, 2026 (Sat)
Wellsboro, Pennsylvania, United States
$92.81 - $323
EHQ Valley Falls 6 & 12 Hour
May 2, 2026 (Sat)
Fairmont, West Virginia, United States
$66.25 - $110
Run for Kids Challenge
May 2, 2026 (Sat)
Pelham, Alabama, United States
$149.93
Glorieta Twelve Hour Endurance Run
May 2, 2026 (Sat)
Glorieta, New Mexico, United States
Bailes Ridge 8hr/12hr
May 2, 2026 (Sat)
Fort Mill, South Carolina, United States
Spider Mountain Trail Run
May 2, 2026 (Sat)
Burnet, Texas, United States
24hrs Sittard
May 2-3, 2026 (Sat-Sun)
Sittard, Limburg, Netherlands
White Lake Ultras
May 2, 2026 (Sat)
Tamworth, New Hampshire, United States
$136.62 - $232.47
Prickly Pine Jackpot 24 Hour Solo/Relay
May 2, 2026 (Sat)
Dousman, Wisconsin, United States
Carolina Thread 8hr/12hr
May 2, 2026 (Sat)
Lancaster, South Carolina, United States
$110 - $131.3
Glorieta 12 Hour Endurance Run/Ruck
May 2, 2026 (Sat)
Santa Fe, New Mexico, United States
Muddy Crudd's Ultra Trail Party
May 9, 2026 (Sat)
Valley, Alabama, United States
$107.68 - $132.36
Conquer the Canuck Marathon Ultra Trail Weekend
May 9, 2026 (Sat)
Cambridge, Ontario, Canada
Circle of the Dragon
May 9, 2026 (Sat)
Meridian, Mississippi, United States
$120.65
24 Horas a Correr Mem Martins
May 9-10, 2026 (Sat-Sun)
Mem Martins, Lisbon, Portugal
Formartine & Buchan Railway 12 Hour Ultra Marathon
May 9, 2026 (Sat)
Maud Railway Museum, Scotland, United Kingdom
High Noon Showdown
May 9, 2026 (Sat)
Enoree, South Carolina, United States
$66.25 - $131.3
Dawn to Dusk to Dawn Track Ultra
May 9, 2026 (Sat)
Sharon Hill, Pennsylvania, United States
Speed Goat Ultra
May 9, 2026 (Sat)
Broadview, Montana, United States
$82.18 - $216.5
Mind the Ducks
May 9, 2026 (Sat)
Webster, New York, United States
Nakkertok Trail Enduro
May 9, 2026 (Sat)
Val-des-Monts, Québec, Canada
Running Up for Air-Chuckanut Chinscraper
May 9, 2026 (Sat)
Bellingham, Washington, United States
Endure Trail Runs
May 16, 2026 (Sat)
Florissant, Colorado, United States
Showing 1 - 25 of 52 events