12hr ultra marathons
283 races
One Step Closer
Aug 16, 2025 (Sat)
Seattle, Washington, United States
Night Crawler Endurance Challenge
Aug 22, 2025 (Fri)
Casper, Wyoming, United States
$69.43
Terrible Twelve
Aug 23, 2025 (Sat)
Williamsburg, Virginia, United States
$50.31
Jackrabbit Jubilee
Aug 23, 2025 (Sat)
Buckeye, Arizona, United States
$149 - $189.74
Green Lakes Endurance Runs
Aug 23, 2025 (Sat)
Fayetteville, New York, United States
1.1 - 1.8
$82.18 - $92.81
Hell on Hogsback: Endurance Challenge
Aug 23, 2025 (Sat)
Cleveland, Ohio, United States
Run the Hawk Trail Run
Aug 23, 2025 (Sat)
Middleton, Wisconsin, United States
$86.57 - $97.77
One Mile with a Smile 12 Hour Endurance Run
Aug 23, 2025 (Sat)
Chesapeake, Virginia, United States
$67
The Blood Run
Aug 29-31, 2025 (Fri-Sun)
Lennox, South Dakota, United States
$122.25 - $512.46
24H de Villenave d'Ornon
Aug 30, 2025 (Sat)
Villenave-d'Ornon, Nouvelle-Aquitaine, France
Badgerland Striders 24-12-6 Hour Runs
Aug 30, 2025 (Sat)
Delafield, Wisconsin, United States
Millersylvania 50K
Aug 30, 2025 (Sat)
Olympia, Washington, United States
1
Labor Pain
Aug 31, 2025 (Sun)
Reading, Pennsylvania, United States
Not-A-Sprint Weekend
Aug 31-Sep 1, 2025 (Sun-Mon)
Forest City, North Carolina, United States
$157.33 - $174.43
Mendocino Running Festival
Sep 6, 2025 (Sat)
Mendocino, California, United States
$135 - $155
Chasing Trails Ultras
Sep 6, 2025 (Sat)
Old Fort, North Carolina, United States
$103.43 - $115.32
S.O.S.
Sep 6, 2025 (Sat)
Middleburg, Florida, United States
$99.58 - $129.43
Joust 12 Hr and 24 Hr Challenge
Sep 6, 2025 (Sat)
Holt Heath, Worcester, West Midlands, United Kingdom
Glenmore 24 Trail Race
Sep 6, 2025 (Sat)
Aviemore, Scotland, United Kingdom
Sunshine Endurance Run
Sep 6, 2025 (Sat)
Thomaston, Georgia, United States
Riverbend Ultras
Sep 13, 2025 (Sat)
Jupiter, Florida, United States
1.3
$42.29 - $53.65
Pawling 24 Hour Trail Running Festival
Sep 13, 2025 (Sat)
Pawling, New York, United States
$71.56 - $152.6
12-Hour Adventure Trail Run
Sep 13, 2025 (Sat)
Triangle, Virginia, United States
$163.25
Time Run Challenge de Nantes
Sep 13, 2025 (Sat)
Hippodrome de Nantes, Pays de la Loire, France
Mountaineer Rumble 12 Hour
Sep 13, 2025 (Sat)
Clover, South Carolina, United States
$24
Showing 76 - 100 of 283 events