US Ultramarathons

Browse our Ultramarathon Calendar for races organized in the USA.

1,077 races

Ragnar Relay Tennessee

  • North America | USA | East South Central | Tennessee | Chattanooga
  • Ultramarathon - 196 miles
  • October 24, 2014
  • Trail Ragnar Relay Series

Cactus Rose 100 Mi Trail Run

  • North America | USA | West South Central | Texas | Bandera
  • Ultramarathon - 100 miles
  • October 25, 2014 - 05:00
  • UTMB Qualifier Trail Tejas Trails

Cactus Rose 50 Mi Trail Run

  • North America | USA | West South Central | Texas | Bandera
  • Ultramarathon - 50 miles
  • October 25, 2014
  • Trail Tejas Trails

Goblin Valley Ultra 50K

  • North America | USA | Mountain Region | Utah | Goblin Valley State Park
  • Ultramarathon - 50 kilometers
  • October 25, 2014 - 07:30
  • Hilly Road Running

Prairie Spirit Trail "Fall Classic" 50K Ultra Race

  • North America | USA | West North Central | Kansas | Ottawa
  • Ultramarathon - 50 kilometers
  • October 25, 2014 - 08:00

Prairie Spirit Trail "Fall Classic" 50 Mile Ultra Race

  • North America | USA | West North Central | Kansas | Ottawa
  • Ultramarathon - 50 miles
  • October 25, 2014 - 06:00

Quad State Quad Buster

  • North America | USA | Mid-Atlantic | Pennsylvania | Pen Mar
  • Ultramarathon - 46 miles
  • October 25, 2014

Stinson Beach 50 km

  • North America | USA | California | Stinson Beach Park, Stinson Beach
  • Ultramarathon - 50 kilometers
  • October 25, 2014 - 08:30
  • Pacific Trail Runs

Surf the Murph 50K

  • North America | USA | West North Central | Minnesota | Savage
  • Ultramarathon - 50 kilometers
  • October 25, 2014 - 07:00
  • Hilly Trail

Surf the Murph 50M

  • North America | USA | West North Central | Minnesota | Savage
  • Ultramarathon - 50 miles
  • October 25, 2014 - 06:00
  • Hilly Trail

Triple Lakes Trail 40 Mile Run

  • North America | USA | South Atlantic | North Carolina | Greensboro
  • Ultramarathon - 40 miles
  • October 25, 2014
  • Trail

Whiskeytown 50K Trail Run

  • North America | USA | Pacific | California | Redding
  • Ultramarathon - 50 kilometers
  • October 25, 2014 - 08:00
  • Hilly Trail

Fire on the Mountain 50K

  • North America | USA | South Atlantic | Maryland | Flintstone
  • Ultramarathon - 50 kilometers
  • October 26, 2014
  • Trail Relay

G.O.A.T.z 50K Trail Run

  • North America | USA | Nebraska | Glenn Cunningham Lake, Omaha
  • Ultramarathon - 50 kilometers
  • October 26, 2014 - 08:00
  • Trail

Lake Hodges 50K

  • North America | USA | Pacific | California | Escondido
  • Ultramarathon - 50 kilometers
  • October 26, 2014 - 07:00
  • Trail