US Ultramarathons

Browse our Ultramarathon Calendar for races organized in the USA.

1,078 races

IMTUF 100

  • North America | USA | Mountain Region | Idaho | McCall
  • Ultramarathon - 100 miles
  • August 29, 2014 - 06:00
  • UTMB Qualifier Trail Mountain

Annihilator 50K

  • North America | USA | North Carolina | Connelly Springs
  • Ultramarathon - 50 kilometers
  • August 30, 2014 - 07:30

Go! KT82 Trail Relay

  • North America | USA | Missouri | Creve Coeur Park
  • Ultramarathon - 82 miles
  • August 30, 2014 Inaugural race
  • Trail Relay

Iron Mountain 30 mile Trail Run

  • North America | USA | South Atlantic | Virginia | Damascus
  • Ultramarathon - 30 miles
  • August 30, 2014 - 07:00
  • Trail

Iron Mountain 50 mile Trail Run

  • North America | USA | South Atlantic | Virginia | Damascus
  • Ultramarathon - 50 miles
  • August 30, 2014 - 07:00
  • Trail

PCT Bunker to Bonneville 50K

  • North America | USA | Pacific | Washington | Carson
  • Ultramarathon - 50 kilometers
  • August 30, 2014 - 07:30
  • Hilly Trail

Silverton 1000 - 100 Miler

  • North America | USA | Colorado | Silverton
  • Ultramarathon - 100 miles
  • August 30, 2014 - 07:00

Tantalus Triple Trek

  • North America | USA | Hawaii | O'ahu
  • Ultramarathon - 30 miles
  • August 30, 2014 - 05:30
  • Trail

The Pinellas Trail Challenge

  • North America | USA | Florida | St. Petersburg
  • Ultramarathon - 46 miles
  • August 30, 2014 - 06:30
  • Flat Urban Trail

The Ring - Massanutten Trail Circuit Run

  • North America | USA | South Atlantic | Virginia | Front Royal
  • Ultramarathon - 71 miles
  • August 30, 2014
  • Trail

The Rock Run

  • North America | USA | Massachusetts | Nantucket
  • Ultramarathon - 50 miles
  • August 30, 2014 - 06:00
  • Relay

Jay Peak 50K Ultra

  • North America | USA | New England | Vermont | Jay
  • Ultramarathon - 50 kilometers
  • August 31, 2014 - 08:30
  • Hilly Barefoot Trail Sub5 Racing

Lake Michigan Trail 50K

  • North America | USA | Wisconsin | Milwaukee County Parks
  • Ultramarathon - 50 kilometers
  • August 31, 2014 - 06:00 Inaugural race
  • Charity Trail

Yeti Snakebite 50K

  • North America | USA | Georgia | Lithia Springs
  • Ultramarathon - 50 kilometers
  • August 31, 2014 - 07:00
  • Trail

Yeti Snakebite 50M

  • North America | USA | Georgia | Lithia Springs
  • Ultramarathon - 50 miles
  • August 31, 2014 - 07:00
  • Trail