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.

3,385 races

"Running for the Bay!" Marathon

October 22, 2017 Race day !
USA / South Atlantic / Florida / Apalachicola Bay
Ultramarathon
Road Running Wheelchair

Bimbler's Bluff 50k

October 22, 2017 Race day !
USA / New England / Connecticut / Guilford
Ultramarathon
Road Running

Bobcat Trail Race

October 22, 2017 Race day !
USA / Mountain Region / Colorado / Palmer Park, Colorado Springs
Ultramarathon

G.O.A.T.z Trail Runs

October 22, 2017 Race day !
USA / West North Central / Nebraska / Glenn Cunningham Lake, Omaha
Ultramarathon
Trail

Ghost Train Trail Races

October 22, 2017 Race day !
USA / New England / New Hampshire / Brookline
Ultramarathon
Trail Tarc Trail Series

Ghost Train Trail Races

October 22, 2017 Race day !
USA / New England / New Hampshire / Brookline
Ultramarathon
Trail Tarc Trail Series

Ghost Train Trail Races

October 22, 2017 Race day !
USA / New England / New Hampshire / Brookline
Ultramarathon
Trail Tarc Trail Series

Ghost Train Trail Races

October 22, 2017 Race day !
USA / New England / New Hampshire / Brookline
Ultramarathon
Trail Tarc Trail Series

Ghost Train Trail Races

October 22, 2017 Race day !
USA / New England / New Hampshire / Brookline
Ultramarathon
Trail Tarc Trail Series

Ghost Train Trail Races

October 22, 2017 Race day !
USA / New England / New Hampshire / Brookline
Ultramarathon
Trail Tarc Trail Series

Grand Trail du Lac

October 22, 2017 Race day !
France / Rhône-Alpes / Savoie / Aix-les-Bains
Ultramarathon
Trail Mountain Relay

Grand Trail du Lac - Gtl

October 22, 2017 Race day !
France / Rhône-Alpes / Savoie / Le Bourget-du-Lac
Ultramarathon
Trail
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