50K trail ultra marathons
136 races
Amazean Jungle Trail
May 1-3, 2026 (Fri-Sun)
Betong District, Yala, Thailand
1.4 - 2.4
Salt Flats Endurance Runs
May 1-2, 2026 (Fri-Sat)
Wendover, Utah, United States
1.1 - 2.4
$287.32 - $457.61
TihioRace
May 1-3, 2026 (Fri-Sun)
Tichio, Western Macedonia, Greece
Heartland 50
May 2, 2026 (Sat)
Cassoday, Kansas, United States
$173.63 - $196.31
Folsom Lake Trail Run
May 2, 2026 (Sat)
Folsom, California, United States
$147.27
Kanawha Trace Trail Run
May 2, 2026 (Sat)
Ona, West Virginia, United States
1.2
$98.12
Lost Creek Trail Runs
May 2, 2026 (Sat)
Trail, Oregon, United States
$136.62
Oxbow 50K
May 2, 2026 (Sat)
Carberry, Manitoba, Canada
CA$157
Ultra X Scotland
May 2-3, 2026 (Sat-Sun)
Inverness, Scotland, United Kingdom
1.2 - 2.3
Trails to the Sky 50K/10K
May 2, 2026 (Sat)
Glen Gardner, New Jersey, United States
1.2
$87.5
The Big Deal at Great Seal
May 2, 2026 (Sat)
Chillicothe, Ohio, United States
$119.58
Grayson Highlands
May 2-3, 2026 (Sat-Sun)
Mouth of Wilson, Virginia, United States
1.2 - 1.7
$165.23 - $165.84
Greenland Trail Races
May 2, 2026 (Sat)
Larkspur, Colorado, United States
1
McDonald Forest
May 2, 2026 (Sat)
Corvallis, Oregon, United States
1.3
$110
Weaver's Way 50K and 50mile Ultramarathon
May 2, 2026 (Sat)
Cromer, East of England, United Kingdom
Welsh 3000's Challenge
May 2, 2026 (Sat)
Capel Curig, Wales, United Kingdom
1.6
Merbabu Skyrace
May 2-3, 2026 (Sat-Sun)
Mount Merbabu, Central Java, Indonesia
The Big 50
May 2, 2026 (Sat)
Pine Mountain, Kentucky, United States
Big a 50K
May 2, 2026 (Sat)
York, Maine, United States
TutHell 50K
May 2, 2026 (Sat)
Sioux Falls, South Dakota, United States
1.5
$0
Run Happy 50K
May 2, 2026 (Sat)
North Liberty, Indiana, United States
The Big 50
May 2, 2026 (Sat)
Pine Mountain, Georgia, United States
1.3
$76.87
Hacienda Hills Trail Run
May 2, 2026 (Sat)
San Jose, California, United States
$131
Spartan Trail - Bear Mountain Trail Challenge
May 2, 2026 (Sat)
Tomkins Cove, New York, United States
1.2
Maple Syrup Fun Run
May 2, 2026 (Sat)
Faribault, Minnesota, United States
Showing 1 - 25 of 136 events