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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2,956 races

Wildcat Ridge Romp

Wildcat Ridge Romp 50k

  • August 08, 2015 - 06:00
  • North America | USA | Mid-Atlantic | New Jersey | Rockaway Township
  • Ultramarathon - 50 kilometers
  • NJ Trail Series

Wildcat Ridge Romp

Wildcat Ridge Romp 50M

  • August 08, 2015 - 06:00
  • North America | USA | Mid-Atlantic | New Jersey | Rockaway Township
  • Ultramarathon - 50 miles
  • NJ Trail Series

Crystal Springs Trail Run (summer)

Crystal Springs 50 Km Trail Run (summer)

  • August 09, 2015 - 08:30
  • North America | USA | Pacific | California | Woodside
  • Ultramarathon - 50 kilometers
  • Hilly Costal Trail Runs Trail

Monschau Marathon

Monschau Ultra-Marathon

  • August 09, 2015
  • Europe | Germany | North Rhine-Westphalia | Monschau
  • Ultramarathon - 56 kilometers
  • Road Running

Salisbury 54321

Salisbury 54321 50K Ultra Marathon

  • August 09, 2015 - 09:00
  • Europe | United Kingdom | Wiltshire | Salisbury
  • Ultramarathon - 50 kilometers
  • Walk Charity Trail

Thames Challenge

Cotswold Ultra

  • August 13, 2015 - 08:00
  • Europe | United Kingdom | Gloucestershire | Kemble
  • Ultramarathon - 44.5 meters
  • Ultra Running Ltd

Swiss Irontrail

Swiss Irontrail T201

  • August 13, 2015 - 12:00
  • Europe | Switzerland | Grisons | Pontresina
  • Ultramarathon - 202.7 kilometers
  • UTMB Qualifier Trail Mountain

100 km Dodentocht®

  • August 14, 2015
  • Europe | Belgium | Flanders | Bornem
  • Ultramarathon - 100 kilometers
  • UTMB Qualifier Trail

Beetle Kill 200k Endurance Run

Beetle Kill 100k Endurance Run

  • August 14, 2015
  • North America | USA | Colorado | Crawford
  • Ultramarathon - 100 kilometers
  • Trail Mountain Ever Run Racing

Beetle Kill 200k Endurance Run

  • August 14, 2015
  • North America | USA | Colorado | Crawford
  • Ultramarathon - 200 kilometers
  • Trail Mountain Ever Run Racing

Beetle Kill 200k Endurance Run

Beetle Kill 50k Endurance Run

  • August 14, 2015
  • North America | USA | Colorado | Crawford
  • Ultramarathon - 50 kilometers
  • Trail Mountain Ever Run Racing

Fat Dog 100 Trail Race

Fat Dog 100 Trail Race: 120 mile

  • August 14, 2015
  • North America | Canada | British Columbia | Keremeos
  • Ultramarathon - 120 miles
  • Trail Relay Mountain

Thames Challenge

Oxford Ultra

  • August 14, 2015 - 08:00
  • Europe | United Kingdom | Gloucestershire | Kemble
  • Ultramarathon - 65.7 miles
  • Ultra Running Ltd

Ragnar Relay Great River

  • August 14, 2015
  • North America | USA | West North Central | Minnesota | Winona
  • Ultramarathon - 200 miles
  • Trail Ragnar Relay Series

Ragnar Trail Tahoe

  • August 14, 2015
  • North America | USA | Pacific | California | Sierra-at-Tahoe Resort, Twin Bridges
  • Ultramarathon - 136 miles
  • Trail Relay