US Ultramarathons

Browse our Ultramarathon Calendar for races organized in the USA.

1,077 races

Bear 100

  • North America | USA | Mountain Region | Utah | Logan
  • Ultramarathon - 100 miles
  • September 26, 2014 - 06:00
  • UTMB Qualifier Trail Mountain

Ragnar Relay Adirondacks

  • North America | USA | Mid-Atlantic | New York | Saratoga Springs
  • Ultramarathon - 210 miles
  • September 26, 2014
  • Relay Ragnar Relay Series

100 Not Yo Momma's - 100K

  • North America | USA | East North Central | Ohio | Great Seal State Park, Chillicothe
  • Ultramarathon - 100 kilometers
  • September 27, 2014 - 05:30

100 Not Yo Momma's - 100 Mile

  • North America | USA | East North Central | Ohio | Great Seal State Park, Chillicothe
  • Ultramarathon - 100 miles
  • September 27, 2014 - 05:30

100 Not Yo Momma's - 50K

  • North America | USA | East North Central | Ohio | Great Seal State Park, Chillicothe
  • Ultramarathon - 50 kilometers
  • September 27, 2014 - 07:30

100 Not Yo Momma's - 75K

  • North America | USA | East North Central | Ohio | Great Seal State Park, Chillicothe
  • Ultramarathon - 75 kilometers
  • September 27, 2014 - 05:30

Belmead Trail Fest 50K

  • North America | USA | Virginia | Powhatan
  • Ultramarathon - 50 kilometers
  • September 27, 2014 - 08:30 Inaugural race
  • Hilly Charity Trail

Belmead Trail Fest 50M

  • North America | USA | Virginia | Powhatan
  • Ultramarathon - 50 miles
  • September 27, 2014 - 08:00 Inaugural race
  • Hilly Charity Trail

Berkeley Trail Adventure - 50K

  • North America | USA | Pacific | California | Tilden Regional Park, Berkeley
  • Ultramarathon - 50 kilometers
  • September 27, 2014 - 08:30
  • Inside Trail Racing Trail

Cle Elum Ridge 50K

  • North America | USA | Pacific | Washington | Cle Elum
  • Ultramarathon - 50 kilometers
  • September 27, 2014 - 08:00
  • Trail Rainshadow Running

Elk 50K

  • North America | USA | Utah | Timpanogos Park, Provo
  • Ultramarathon - 50 kilometers
  • September 27, 2014 - 06:00
  • Trail Ultimate Endurance Race Series

Flagstaff to Grand Canyon Stagecoach Line 100 mile Ultra & Relay

  • North America | USA | Mountain Region | Arizona | Flagstaff
  • Ultramarathon - 100 miles
  • September 27, 2014 - 14:00
  • UTMB Qualifier Trail Relay Mountain

FlatRock 50K

  • North America | USA | West North Central | Kansas | Independence
  • Ultramarathon - 50 kilometers
  • September 27, 2014 - 07:30
  • Hilly Trail

FlatRock 50K Ultra Trail Race

  • North America | USA | West North Central | Kansas | Independence, KS
  • Ultramarathon - 50 kilometers
  • September 27, 2014 - 07:30

Georgia Jewel 100 Mile Run

  • North America | USA | South Atlantic | Georgia | Dalton
  • Ultramarathon - 100 miles
  • September 27, 2014
  • Trail