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

Athens International Ultramarathon Festival

1000K
February 02, 2017 The race has already taken place.
Greece / Athens
Ultramarathon - 1000 kilometers
Charity

Athens International Ultramarathon Festival

1000 miles
February 02, 2017 The race has already taken place.
Greece / Athens
Ultramarathon - 1000 miles
Charity

100 Bornes du Père Noël

December 16, 2016 The race has already taken place.
French Guiana / Kourou
Ultramarathon - 100 kilometers
Relay

100 Capital Classic

100 Capital Classic - 100 Mile
September 17, 2016 The race has already taken place.
South Africa / Pietermaritzburg
Ultramarathon - 100 miles

Jakarta Ultra 100

100K
November 12, 2016 The race has already taken place.
Indonesia / Jakarta
Ultramarathon - 100 kilometers

6 Days UMF - Italian UltraMarathon Festival

June 09, 2017 Race day in 2 months
Italy / Basilicata / POLICORO (MT)
Ultramarathon - 100 kilometers

THEAGENIOS THASSOS ULTRA 100

100k
March 26, 2016 The race has already taken place.
Greece / THASSOS ISLAND
Ultramarathon - 100 kilometers

Plain 100 Mile Endurance Run

100K
September 16, 2017 Race day in 6 months
USA / Pacific / Washington / Plain
Ultramarathon - 100 kilometers
Trail

Worlds End Ultramarathon

100K
June 03, 2017 Race day in 2 months
USA / Mid-Atlantic / Pennsylvania / Forksville
Ultramarathon - 100 kilometers
Trail Mountain

Lovers Leap of Faith

100K
July 01, 2017 Race day in 3 months
USA / Pacific / California / Strawberry
Ultramarathon - 100 kilometers

Mo' Bell

100K
August 05, 2017 Race day in 4 months
USA / East South Central / Tennessee / Burns
Ultramarathon - 100 kilometers

Angel Fire Endurance Run

100K
June 17, 2017 Race day in 3 months
USA / Mountain Region / New Mexico / Angel Fire
Ultramarathon - 100 kilometers
Trail Mountain

Black Canyon Ultras

100K
February 18, 2017 The race has already taken place.
USA / Mountain Region / Arizona / Spring Valley
Ultramarathon - 100 kilometers
Trail Aravaipa Running Western States Qualifier

Wildcat Ridge Romp

100k
August 12, 2017 Race day in 5 months
USA / Mid-Atlantic / New Jersey / Rockaway Township
Ultramarathon - 100 kilometers
NJ Trail Series

Sleman Ultra Marathon-Lomba Lari Ultra Marathon

100K
May 08, 2016 The race has already taken place.
Indonesia / Kaliurang
Ultramarathon - 100 kilometers