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.

3,271 races

Ultramarathon des Ziban

April 06, 2017 The race has already taken place.
Algeria / Biskra
Ultramarathon - 100 kilometers
Desert Road Running

Els 2900 Alpine Run

October 07, 2017 Race day in 4 months
Andorra / Les Bons
Ultramarathon - 70 kilometers
Trail Mountain

Andorra Ultra Trail

Mític
July 07, 2017 Race day in about 1 month
Andorra / Ordino
Ultramarathon - 112 kilometers
Trail Mountain

Andorra Ultra Trail

Celestrail
July 08, 2017 Race day in about 1 month
Andorra / Ordino
Ultramarathon - 83 kilometers
Trail Mountain

Andorra Ultra Trail

Eufòria dels Cims
July 05, 2017 Race day in about 1 month
Andorra / Ordino
Ultramarathon - 233 kilometers
Team Trail Mountain

Andorra Ultra Trail

Ronda dels Cims
July 07, 2017 Race day in about 1 month
Andorra / Ordino
Ultramarathon - 170 kilometers
Trail Mountain Relay

Andorra Ultra Trail

Marató dels Cims
July 08, 2017 Race day in about 1 month
Andorra / Ordino
Ultramarathon - 42.500 kilometers
Trail Mountain

White Continent Marathon, 1/2 Marathon & 50k

White Continent 50K
January 30, 2018 Race day in 8 months
Antartica / King George Island
Ultramarathon - 50 kilometers
Polar Package tour Extreme

Yaboty Ultra Marathon

Ultra Marathon 50K
September 16, 2017 Race day in 4 months
Argentina / El Soberbio
Ultramarathon - 50 kilometers
Trail

Yaboty Ultra Marathon

Ultra Trail 80
September 16, 2017 Race day in 4 months
Argentina / El Soberbio
Ultramarathon - 80 kilometers
Trail

Fiambala Desert Trail

80KX2D
May 26, 2017 The race has already taken place.
Argentina / Fiambala
Ultramarathon - 80 kilometers
Hilly Desert Trail

Fiambala Desert Trail

50K
May 27, 2017 The race has already taken place.
Argentina / Fiambala
Ultramarathon - 50 kilometers
Hilly Desert Trail

The North Face® Endurance Challenge Argentina

80 km
April 02, 2017 The race has already taken place.
Argentina / San Carlos de Bariloche
Ultramarathon - 80 kilometers
UTMB Qualifier Trail Mountain

The North Face® Endurance Challenge Argentina

50 km
April 02, 2017 The race has already taken place.
Argentina / San Carlos de Bariloche
Ultramarathon - 50 kilometers
Trail Mountain

La Pachamama

La Pachamama 73 km
October 15, 2017 Race day in 5 months
Argentina / San Francisco de Tilcara
Ultramarathon - 73 kilometers
UTMB Qualifier Trail Mountain