Win your entry for the 100km run Biel in Switzeland

2015 - 2016 USA Trail Ultramarathon Calendar

Browse our Ultramarathon Calendar for races organized in USA bearing the tag Trail among 862 races.

862 races

Marlette 50K Trail Run

  • North America | USA | Nevada | Spooner Lake Backcountry Lake Tahoe Nevada State Park
  • Ultramarathon - 50 kilometers
  • August 16, 2015 - 07:30 Inaugural race
  • Trail Tahoe Trail Running Series

Run on the Sly 50K Trail Run

  • North America | USA | Pacific | California | Pollock Pines
  • Ultramarathon - 50 kilometers
  • August 16, 2015
  • Hilly Trail

Bulldog 50K Ultra

  • North America | USA | Pacific | California | Calabasas
  • Ultramarathon - 50 kilometers
  • August 22, 2015 - 06:30
  • Trail

Devil Mountain 50K

  • North America | USA | Mountain Region | Colorado | Pagosa Springs
  • Ultramarathon - 50 kilometers
  • August 22, 2015 - 07:00
  • Trail Mountain

Leadville Trail 100 Run

  • North America | USA | Mountain Region | Colorado | Leadville
  • Ultramarathon - 100 miles
  • August 22, 2015 - 04:00
  • UTMB Qualifier Trail Mountain Leadville Race Series Western States Qualifier

Lean Horse 50 Km

  • North America | USA | West North Central | South Dakota | Hot Springs
  • Ultramarathon - 50 kilometers
  • August 22, 2015
  • Trail

Lean Horse Half Hundred

  • North America | USA | West North Central | South Dakota | Hot Springs
  • Ultramarathon - 50 miles
  • August 22, 2015
  • Trail

Lean Horse Hundred

  • North America | USA | West North Central | South Dakota | Hot Springs
  • Ultramarathon - 100 miles
  • August 22, 2015
  • Trail

North Country Ultra Marathon

  • North America | USA | East North Central | Michigan | Manistee
  • Ultramarathon - 50 miles
  • August 22, 2015 - 07:30
  • Trail

Salt Point 50 km

  • North America | USA | California | Salt Point State Park, Jenner
  • Ultramarathon - 50 kilometers
  • August 22, 2015 - 08:30
  • Trail Pacific Trail Runs

Silverton Alpine 50K

  • North America | USA | Mountain Region | Colorado | Silverton
  • Ultramarathon - 50 kilometers
  • August 22, 2015
  • Trail Aravaipa Running Mountain

Where's Waldo 100k Ultra

  • North America | USA | Pacific | Oregon | Willamette Pass
  • Ultramarathon - 100 kilometers
  • August 22, 2015 - 05:00
  • Trail Oregon Trail Ultra Marathon Series Western States Qualifier

Baker Trail UltraChallenge

  • North America | USA | Mid-Atlantic | Pennsylvania | Brookville
  • Ultramarathon - 50 miles
  • August 29, 2015 - 06:30
  • Trail

Cascade Crest 100 Mile Endurance Run

  • North America | USA | Pacific | Washington | Easton
  • Ultramarathon - 100 miles
  • August 29, 2015 - 10:00
  • UTMB Qualifier Trail Mountain Western States Qualifier

Green Lakes 100 km Trail Race

  • North America | USA | Mid-Atlantic | New York | Fayetteville
  • Ultramarathon - 100 kilometers
  • August 29, 2015 - 06:00
  • Trail