US Ultramarathons

Browse our Ultramarathon Calendar for races organized in the USA.

1,368 races

  • 1
  • 92

E.T. Full Moon Midnight Marathon, 1/2, 10K, & 51K

51 km
  • 2015-08-30
  • USA | Nevada | Rachel
  • Ultramarathon - 51 kilometers
  • Night Calico Racing

Diablo Trail Run

Diablo Trail 50K Run
  • 2015-08-30
  • USA | California | Clayton
  • Ultramarathon - 50 kilometers
  • Hilly Walk Trail Coastal Trail Runs

Yeti Snakebite 50/50

Yeti Snakebite 50K
  • 2015-08-30
  • USA | Georgia | Lithia Springs
  • Ultramarathon - 50 kilometers
  • Trail

Yeti Snakebite 50/50

Yeti Snakebite 50M
  • 2015-08-30
  • USA | Georgia | Lithia Springs
  • Ultramarathon - 50 miles
  • Trail

Burning Man UltraMarathon

  • 2015-09-02
  • USA | Nevada | Black Rock City
  • Ultramarathon - 50 kilometers
  • Desert

I Ran Marathons Triple Crown Challenge

50K
  • 2015-09-05
  • USA | Texas | San Antonio
  • Ultramarathon - 50 kilometers

Do-Wacka-Do 5Mile, 25k, and 50k Trail Runs

Do-Wacka-Do 50k Trail Run
  • 2015-09-05
  • USA | Oklahoma | Erick
  • Ultramarathon - 50 kilometers
  • Trail

DoWackaDo Trail Runs

DoWackaDo 50 Mile Trail Run
  • 2015-09-05
  • USA | Oklahoma | Erick
  • Ultramarathon - 50 miles
  • Trail

DoWackaDo Trail Runs

DoWackaDo Trail 50K Run
  • 2015-09-05
  • USA | Oklahoma | Erick
  • Ultramarathon - 50 kilometers
  • Trail

Call of the Wild Runs Marathon/Half Marathon/50k (September)

First Call Veterans Day 50K (September)
  • 2015-09-05
  • USA | Washington | Bothell
  • Ultramarathon - 50 kilometers

Go! KT82 Trail Relay

  • 2015-09-05
  • USA | Missouri | Creve Coeur Park
  • Ultramarathon - 82 miles
  • Trail Relay

Hideaway Hundred

Hideaway Hundred 100 Miler
  • 2015-09-05
  • USA | Colorado | Winter Park
  • Ultramarathon - 102 miles
  • Trail Mountain

Hideaway Hundred

Hideaway Hundred 50 Miler
  • 2015-09-05
  • USA | Colorado | Winter Park
  • Ultramarathon - 50.8 miles
  • Trail Mountain

Iron Mountain Trail Runs

Iron Mountain 30 mile Trail Run
  • 2015-09-05
  • USA | Virginia | Damascus
  • Ultramarathon - 30 miles
  • Trail

Iron Mountain Trail Runs

Iron Mountain 50 mile Trail Run
  • 2015-09-05
  • USA | Virginia | Damascus
  • Ultramarathon - 50 miles
  • Trail
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