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

Garmin Runfire Salt Lake Ultra Trail

July 28, 2017 Race day in 4 days
Turkey / Aksaray
Ultramarathon
Desert Trail

High Lonesome 100

July 28, 2017 Race day in 4 days
USA / Mountain Region / Colorado / Salida
Ultramarathon

Kennet & Avon Canal Race

July 28, 2017 Race day in 4 days
United Kingdom / England / City of Bristol / Bristol
Ultramarathon

Swiss Irontrail

July 28, 2017 Race day in 4 days
Switzerland / Grisons / Davos
Ultramarathon
Trail Mountain UTMB Qualifier Relay

Swiss Irontrail

July 28, 2017 Race day in 4 days
Switzerland / Grisons / Davos
Ultramarathon
Trail Mountain UTMB Qualifier

Südtirol Ultra Skyrace

July 28, 2017 Race day in 4 days
Italy / Trentino-Alto Adige/Südtirol / Bolzano
Ultramarathon
Trail Mountain

Südtirol Ultra Skyrace

July 28, 2017 Race day in 4 days
Italy / Trentino-Alto Adige/Südtirol / Bolzano
Ultramarathon
Trail Mountain

The Battle at Bristol Mountain

July 28, 2017 Race day in 4 days
USA / Mid-Atlantic / New York / Canandaigua
Ultramarathon
Trail

The Montane Lakeland 100

July 28, 2017 Race day in 4 days
United Kingdom / England / East Riding of Yorkshire / Coniston
Ultramarathon
Trail Mountain UTMB Qualifier

Ultransilvania

July 28, 2017 Race day in 4 days
Romania / Deva
Ultramarathon

Born to Run - Tralee Marathon Club 40 Mile Ultra

July 29, 2017 Race day in 5 days
Ireland / Munster / Tralee
Ultramarathon

Burning River 100 Mile Endurance Run

July 29, 2017 Race day in 5 days
USA / East North Central / Ohio / Willoughby Hills
Ultramarathon
Trail Midwest Grand Slam of Ultrarunning Western States Qualifier Relay
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