Worldwide 2017 – 2018 Ultramarathon Calendar

Looking for a comprehensive guide to 2017 – 2018 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.

3,341 races

Nove Colli Running

May 20, 2017 The race has already taken place.
Italy / Emilia-Romagna / Cesenatico
Ultramarathon
Road Running

Okie Relays

May 20, 2017 The race has already taken place.
USA / West South Central / Oklahoma / Texhoma
Ultramarathon
Road Running Relay

Okie Relays

May 20, 2017 The race has already taken place.
USA / West South Central / Oklahoma / Texhoma
Ultramarathon
Road Running

Old County Tops Fell Race

May 20, 2017 The race has already taken place.
United Kingdom / England / Cumbria / Great Langdale
Ultramarathon
Team Trail Achille Ratti Climbing Club

Oxfam Trailwalker France

May 20, 2017 The race has already taken place.
France / Burgundy / Yonne / Avallon
Ultramarathon
Walk Team Fund raising Oxfam Trailwalker

Playin' Possum 50k

May 20, 2017 The race has already taken place.
USA / East North Central / Ohio / Delaware State Park
Ultramarathon
Trail

San Francisco 50 & 100 Mile Endurance Runs

May 20, 2017 The race has already taken place.
USA / Pacific / California / Rodeo Beach, Golden Gate National Recreation, CA
Ultramarathon
Coastal Trail Runs Hilly Trail

San Francisco 50 & 100 Mile Endurance Runs

May 20, 2017 The race has already taken place.
USA / Pacific / California / Rodeo Beach, Golden Gate National Recreation, CA
Ultramarathon
Coastal Trail Runs Hilly Trail

Silver State

May 20, 2017 The race has already taken place.
USA / Mountain Region / Nevada / Reno
Ultramarathon
Hilly Fun Trail

Silver State

May 20, 2017 The race has already taken place.
USA / Mountain Region / Nevada / Reno
Ultramarathon
Hilly Fun Trail

Spring Superior Trail Races

May 20, 2017 The race has already taken place.
USA / West North Central / Minnesota / Lutsen
Ultramarathon
Trail

Sun Mountain

May 20, 2017 The race has already taken place.
USA / Pacific / Washington / Winthrop
Ultramarathon
Trail Rainshadow Running
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