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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2,954 races

Razorback Endurance Race

Razorback 100 Mile Endurance Race

  • February 28, 2015 - 18:00
  • North America | USA | California | San Martin
  • Ultramarathon - 100 miles

Razorback Endurance Race

Razorback 50K Endurance Race

  • February 28, 2015 - 06:00
  • North America | USA | California | San Martin
  • Ultramarathon - 50 kilometers

Razorback Endurance Race

Razorback 50 Mile Endurance Race

  • February 28, 2015 - 06:00
  • North America | USA | California | San Martin
  • Ultramarathon - 50 miles

Run for Amma

Run for Amma 50K

  • February 28, 2015 - 08:45
  • North America | USA | California | Sunnyvale
  • Ultramarathon - 50 kilometers
  • Charity Trail

Run for Amma

Run for Amma 50 Miler

  • February 28, 2015 - 05:00
  • North America | USA | California | Sunnyvale
  • Ultramarathon - 50 miles
  • Charity Trail

Salmon Falls 50K

  • February 28, 2015 - 08:00
  • North America | USA | California | Pilot Hill
  • Ultramarathon - 50 kilometers
  • Trail

South African Addo Elephant Trail Run

South African Addo Elephant 44 km Trail Run

  • February 28, 2015 - 06:00
  • Africa | South Africa | Zuurberg Mountain Village
  • Ultramarathon - 44 miles
  • Trail

South African Addo Elephant Trail Run

South African Addo Elephant 76 km Trail Run

  • February 28, 2015 - 06:00
  • Africa | South Africa | Zuurberg Mountain Village
  • Ultramarathon - 76 kilometers
  • UTMB Qualifier Trail

Sycamore 100k

  • February 28, 2015 - 06:00
  • North America | USA | California | Poway
  • Ultramarathon - 100 kilometers
  • Trail Relay

Tulsa Running Club Post Oak Lodge Challenge

Tulsa Running Club Post Oak Lodge 50K Trail Run

  • February 28, 2015 - 08:00
  • North America | USA | West South Central | Oklahoma | Tulsa
  • Ultramarathon - 50 kilometers
  • Trail

Trail Terras do Sicó

Ultra Trail Terras do Sicó - 100 km

  • February 28, 2015
  • Europe | Portugal | Condeixa-a-Nova
  • Ultramarathon - 100 kilometers
  • Trail

Waiheke Round Island 100 km Relay

  • February 28, 2015 - 06:00
  • Oceania | New Zealand | Onetangi Sports Park, Auckland
  • Ultramarathon - 100 kilometers
  • Relay

Cowtown Marathon

Cowtown Ultra Marathon

  • March 01, 2015 - 07:00
  • North America | USA | West South Central | Texas | Fort Worth
  • Ultramarathon - 50 kilometers

Dendy Park Urban Trail

Dendy Park Urban Trail 50K

  • March 01, 2015
  • Oceania | Australia | Victoria | Dendy Park, Brighton East
  • Ultramarathon - 50 kilometers
  • Urban Trail

Iditarod Trail Invitational

Iditarod Trail Invitational 1000 mile

  • March 01, 2015 - 14:00
  • North America | USA | Pacific | Alaska | Anchorage
  • Ultramarathon - 1000 miles
  • UTMB Qualifier Snow Invitation only Trail