12hr relay ultra marathons
46 races
Bristow 24/12 Run
Jun 7, 2025 (Sat)
Dexter, Oregon, United States
$120.65 - $301.7
Three Sisters Ultra Festival
Jun 7, 2025 (Sat)
Maryville, Tennessee, United States
$110 - $514.7
Death by Staircase
Jun 7, 2025 (Sat)
Moreau, New York, United States
$60 - $140
Hawaii 1-20-12 Endurance Challenge
Jun 22, 2025 (Sun)
Keaau, Hawaii, United States
$55 - $65
12h de Ceyzériat
Jun 28, 2025 (Sat)
Ceyzériat, Auvergne-Rhône-Alpes, France
ATW Odyssey 12hr Trail Run
Jul 5, 2025 (Sat)
Eaton Ford, East of England, United Kingdom
Chase the Moon
Jul 11, 2025 (Fri)
Highlands Ranch, Colorado, United States
1.4
$152.6 - $360.27
Dirty Dozen Endurance Run
Jul 12, 2025 (Sat)
Pinole, California, United States
Sombrero Sizzler
Jul 12, 2025 (Sat)
Jacksonville, Florida, United States
$88.16 - $249.64
Pinetum Mind Games Endurance Event
Jul 18, 2025 (Fri)
Dixon, Illinois, United States
$50.31 - $147.27
Powderhorn Mountain Ultra and Vert Challenge
Jul 19, 2025 (Sat)
Mesa, Colorado, United States
$216.5 - $376.25
Loopy Looper
Aug 2, 2025 (Sat)
Pennsauken Township, New Jersey, United States
2.6
$141.95 - $536
Run the Hawk Trail Run
Aug 23, 2025 (Sat)
Middleton, Wisconsin, United States
$86.57 - $97.77
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
Joust 12 Hr and 24 Hr Challenge
Sep 6, 2025 (Sat)
Holt Heath, Worcester, West Midlands, United Kingdom
Time Run Challenge de Nantes
Sep 13, 2025 (Sat)
Hippodrome de Nantes, Pays de la Loire, France
Timely Nonsense
Sep 14, 2025 (Sun)
Chicago, Illinois, United States
$60.93 - $216.5
The Dirt Circuit
Sep 20, 2025 (Sat)
Morristown, Tennessee, United States
$136.62 - $536
Tick Tock Ultra
Sep 27, 2025 (Sat)
Lakeland, Florida, United States
$128.85 - $630.25
Arrowhead Endurance Run
Oct 11, 2025 (Sat)
Johnston City, Illinois, United States
$110 - $291.05
BadgerPalooza
Oct 17-18, 2025 (Fri-Sat)
Monroe, New Jersey, United States
$90 - $200
Rule the Roost
Oct 18, 2025 (Sat)
Chillicothe, Ohio, United States
$119.58 - $194.13
Delaware Trail Fest
Oct 18, 2025 (Sat)
Bear, Delaware, United States
$110 - $386.9
DDLM Endurance Run
Oct 24-25, 2025 (Fri-Sat)
Newport, Oregon, United States
$141.95 - $1,078.55
Showing 1 - 25 of 46 events