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.

3,303 races

Ultramarathon des Ziban

April 06, 2017 Race day in 7 days
Algeria / Biskra
Ultramarathon - 100 kilometers
Desert Road Running

Els 2900 Alpine Run

October 15, 2016 The race has already taken place.
Andorra / Les Bons
Ultramarathon - 70 kilometers
Trail Mountain

Andorra Ultra Trail

Mític
July 07, 2017 Race day in 3 months
Andorra / Ordino
Ultramarathon - 112 kilometers
Trail Mountain

Andorra Ultra Trail

Ronda dels Cims
July 07, 2017 Race day in 3 months
Andorra / Ordino
Ultramarathon - 170 kilometers
Trail Mountain Relay

Andorra Ultra Trail

Celestrail
July 08, 2017 Race day in 3 months
Andorra / Ordino
Ultramarathon - 83 kilometers
Trail Mountain

Andorra Ultra Trail

Marató dels Cims
July 08, 2017 Race day in 3 months
Andorra / Ordino
Ultramarathon - 42.500 kilometers
Trail Mountain

Andorra Ultra Trail

Eufòria dels Cims
July 05, 2017 Race day in 3 months
Andorra / Ordino
Ultramarathon - 233 kilometers
Team Trail Mountain

White Continent Marathon, 1/2 Marathon & 50k

White Continent 50K
January 30, 2018 Race day in 10 months
Antartica / King George Island
Ultramarathon - 50 kilometers
Polar Package tour Extreme

Antarctic Ice 100k

January 21, 2017 The race has already taken place.
Antartica / Patriot hills
Ultramarathon - 100 kilometers
Trail Snow

Yaboty Ultra Marathon

Yaboty Ultra Marathon
September 17, 2016 The race has already taken place.
Argentina / El Soberbio
Ultramarathon - 90 kilometers
UTMB Qualifier Trail

Fiambala Desert Trail

Fiambala Desert Trail 50K
May 28, 2016 The race has already taken place.
Argentina / Fiambala
Ultramarathon - 50 kilometers
Hilly Desert Trail

Fiambala Desert Trail

Fiambala Desert Trail 80K
May 28, 2016 The race has already taken place.
Argentina / Fiambala
Ultramarathon - 80 kilometers
UTMB Qualifier Hilly Desert Trail

The North Face® Endurance Challenge Argentina

50 km
April 02, 2017 Race day in 3 days
Argentina / San Carlos de Bariloche
Ultramarathon - 50 kilometers
Trail Mountain

The North Face® Endurance Challenge Argentina

80 km
April 02, 2017 Race day in 3 days
Argentina / San Carlos de Bariloche
Ultramarathon - 80 kilometers
UTMB Qualifier Trail Mountain

La Pachamama

La Pachamama 73 km
October 09, 2016 The race has already taken place.
Argentina / San Francisco de Tilcara
Ultramarathon - 73 kilometers
UTMB Qualifier Trail Mountain