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.

3,343 races

Ultramarathon des Ziban

April 06, 2017 The race has already taken place.
Algeria / Biskra
Ultramarathon
Desert Road Running

Andorra Ultra Trail

July 05, 2017 The race has already taken place.
Andorra / Ordino
Ultramarathon
Trail Mountain Team

Els 2900 Alpine Run

October 07, 2017 Race day in 2 months
Andorra / Les Bons
Ultramarathon
Trail Mountain

Andorra Ultra Trail

July 08, 2017 The race has already taken place.
Andorra / Ordino
Ultramarathon
Trail Mountain

Andorra Ultra Trail

July 07, 2017 The race has already taken place.
Andorra / Ordino
Ultramarathon
Trail Mountain Relay

Andorra Ultra Trail

July 08, 2017 The race has already taken place.
Andorra / Ordino
Ultramarathon
Trail Mountain

Andorra Ultra Trail

July 07, 2017 The race has already taken place.
Andorra / Ordino
Ultramarathon
Trail Mountain

White Continent Marathon, 1/2 Marathon & 50k

January 30, 2018 Race day in 6 months
Antartica / King George Island
Ultramarathon
Polar Package tour Extreme

La Pachamama

October 15, 2017 Race day in 3 months
Argentina / San Francisco de Tilcara
Ultramarathon
UTMB Qualifier Trail Mountain

Ultra Trail Amanecer Comechingón

July 01, 2017 The race has already taken place.
Argentina / Villa Yacanto
Ultramarathon
Trail Mountain

Ultra Trail Amanecer Comechingón

July 01, 2017 The race has already taken place.
Argentina / Villa Yacanto
Ultramarathon
Trail Mountain

The North Face® Endurance Challenge Argentina

April 02, 2017 The race has already taken place.
Argentina / San Carlos de Bariloche
Ultramarathon
Trail Mountain
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