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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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2,666 races

Skydive Ultra 50 km Run

  • North America | USA | Florida | Clewiston
  • Ultramarathon - 50 kilometers
  • January 31, 2015

Skydive Ultra 50M Run

  • North America | USA | Florida | Clewiston
  • Ultramarathon - 50 miles
  • January 31, 2015

Snowshoe Festival 50K

  • North America | USA | Mountain Region | Utah | Midway
  • Ultramarathon - 50 kilometers
  • January 31, 2015 - 08:00
  • Snow

The North Face 100® - Thailand

  • Asia | Thailand | Amphawa
  • Ultramarathon - 100 kilometers
  • January 31, 2015
  • UTMB Qualifier Flat Relay

The North Face 100® - Thailand - 50 km Solo

  • Asia | Thailand | Amphawa
  • Ultramarathon - 50 kilometers
  • January 31, 2015
  • Flat

Ultra Trilhos dos Abutres

  • Europe | Portugal | Miranda do Corvo
  • Ultramarathon - 47 kilometers
  • January 31, 2015 - 08:00
  • UTMB Qualifier Trail

Winter Festival Goat 50K

  • North America | USA | West South Central | Texas | San Antonio
  • Ultramarathon - 50 kilometers
  • January 31, 2015
  • Fast Walk Flat Fun Road Running Trail

Winter Festival Goat 50 Mile

  • North America | USA | West South Central | Texas | San Antonio
  • Ultramarathon - 50 miles
  • January 31, 2015
  • Fast Walk Flat Fun Road Running Trail

2015 Hong Kong Ultra Marathon 12 hrs Race Walking

  • Asia | Hong-Kong | Pak Shek Kok Promenade
  • Ultramarathon - 12 hours
  • February 01, 2015 - 08:00

2015 Hong Kong Ultra Marathon 6 hrs

  • Asia | Hong-Kong | Pak Shek Kok Promenade
  • Ultramarathon - 6 hours
  • February 01, 2015 - 14:00

2015 Hong Kong Ultra Marathon 6 hrs Race Walking

  • Asia | Hong-Kong | Pak Shek Kok Promenade
  • Ultramarathon - 6 hours
  • February 01, 2015 - 14:00

La Ronde Givrée

  • Europe | France | Midi-Pyrénées | Tarn | Castres
  • Ultramarathon - 62 kilometers
  • February 01, 2015 - 09:00
  • Relay

Survival Run: Nicaragua

  • North America | Nicaragua | Isla de Ometepe
  • Ultramarathon - 70 kilometers
  • February 04, 2015 - 04:00
  • Hilly Charity Invitation only Green Central America Mud Obstacle race Trail Mountain Extreme

Arc of Attrition

  • Europe | United Kingdom | Cornwall | Porthtowan
  • Ultramarathon - 100 miles
  • February 06, 2015 - 18:00
  • Trail

Ragnar Relay Florida Keys

  • North America | USA | South Atlantic | Florida | Miami
  • Ultramarathon - 199 miles
  • February 06, 2015
  • Charity Relay Ragnar Relay Series