Worldwide 2015 – 2016 Ultramarathon Calendar

Looking for a comprehensive guide to 2015 – 2016 ultramarathons organized around the world? You can browse our list of half marathons or filter down the selection to a specific location, month or type of race. You’ll find iconic 100 milers, shorter races to test yourself in the ultra world, road races, mountain races, races in deserts. The diversity of ultra races is really amazing.

We consider any race longer than 42.195km or 26.1mi to be an ultramarathon if it is run in a single stage. If you’re looking for races that have a specific fixed duration (ex : 24hr races), you can check the X-hour race calendar. If you like races run on several stages across several days, check our Multiday race calendar

If you’re looking for new 2013 – 2014 ultramarathons to compete in, this is the place to start searching. More than 1,800 ultramarathons are listed in over 75 countries around the world.

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3,001 races

100 Miles of Istria

100 Miles of Istria - 105 km
  • April 18, 2015 - 07:00
  • Europe | Croatia | Lovran
  • Ultramarathon - 105 kilometers
  • UTMB Qualifier Trail Mountain

100 Miles of Istria

100 Miles of Istria - 65 km
  • April 18, 2015
  • Europe | Croatia | Buzet
  • Ultramarathon - 65 kilometers
  • UTMB Qualifier Trail Mountain

Ultra Trail Run Linhas de Torres

75 km
  • April 18, 2015 - 08:30 Inaugural race
  • Europe | Portugal | Torres Vedras
  • Ultramarathon - 75 kilometers
  • Trail

Bel Monte Endurance Run

Bel Monte 50K Endurance Run
  • April 18, 2015 - 06:30
  • North America | USA | South Atlantic | Virginia | Sherando Lake Recreation Area
  • Ultramarathon - 50 kilometers
  • Trail

Bel Monte Endurance Run

Bel Monte 50 mile Endurance Run
  • April 18, 2015 - 06:30
  • North America | USA | South Atlantic | Virginia | Sherando Lake Recreation Area
  • Ultramarathon - 50 miles
  • Trail

C.U.R.E Ultra's

C.U.R.E Ultra's 100K
  • April 18, 2015 - 06:30
  • North America | USA | Mountain Region | Colorado | Chatfield State Park, Littleton
  • Ultramarathon - 100 kilometers
  • Trail

C.U.R.E Ultra's

C.U.R.E Ultra's 50K
  • April 18, 2015 - 07:30
  • North America | USA | Mountain Region | Colorado | Chatfield State Park, Littleton
  • Ultramarathon - 50 kilometers
  • Trail

C.U.R.E Ultra's

C.U.R.E Ultra's 50 Mile
  • April 18, 2015 - 06:30
  • North America | USA | Mountain Region | Colorado | Chatfield State Park, Littleton
  • Ultramarathon - 50 miles
  • Trail

Dalian 100

Dalian 100
  • April 18, 2015 - 06:00
  • Asia | China | Dalian
  • Ultramarathon - 100 kilometers

Dalian 100

Dalian 50
  • April 18, 2015 - 06:00
  • Asia | China | Dalian
  • Ultramarathon - 50 kilometers

Desert R.A.T.S. Trail Running Festival

Desert R.A.T.S. 50K
  • April 18, 2015 - 06:30
  • North America | USA | Mountain Region | Colorado | Fruita
  • Ultramarathon - 50 kilometers
  • Hilly Desert Trail

Desert R.A.T.S. Trail Running Festival

Desert R.A.T.S. Double Marathon
  • April 18, 2015 - 06:30
  • North America | USA | Mountain Region | Colorado | Fruita
  • Ultramarathon - 52 miles
  • Hilly Desert Trail

Diablo Trails Challenge

Diablo Trails Challenge 50K
  • April 18, 2015
  • North America | USA | Pacific | California | Walnut Creek
  • Ultramarathon - 50 kilometers
  • Trail Brazen Racing

Double Chubb

Double Chubb 50k
  • April 18, 2015 - 07:30
  • North America | USA | West North Central | Missouri | Eureka
  • Ultramarathon - 50 kilometers
  • Trail St Louis Ultrarunners Group (SLUG)

DoubleTop 100

DoubleTop 100 100k
  • April 18, 2015 - 07:00
  • North America | USA | South Atlantic | Georgia | Ft Mountain State Park
  • Ultramarathon - 100 kilometers
  • Fast Hilly Fun Trail