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.

3,304 races

Extreme North Dakota Sandhills Ultra Run Experience

Extreme North Dakota Sandhills Ultra Run Experience 50K
March 18, 2017 The race has already taken place.
USA / West North Central / North Dakota / Leonard
Ultramarathon - 50 kilometers
Trail

Hardmoors 55 Ultramarathon

March 18, 2017 The race has already taken place.
United Kingdom / England / North Yorkshire / Helmsley
Ultramarathon - 55 miles
UTMB Qualifier Trail Hardmoors Race Series

High Line Canal 100K

March 18, 2017 The race has already taken place.
USA / Mountain Region / Colorado / Littleton
Ultramarathon - 100 kilometers
Flat

Kathmandu West Valley Rim 50km

Kathmandu West Valley Rim 50km
March 18, 2017 The race has already taken place.
Nepal / Nagarjun National Park
Ultramarathon - 50 kilometers
UTMB Qualifier Trail Mountain

Lake Martin 100

Lake Martin 100 Mile Trail Race
March 18, 2017 The race has already taken place.
USA / East South Central / Alabama / Lake Martin
Ultramarathon - 100 miles
Trail

Lake Martin 100

Lake Martin 27 Mile Trail Race
March 18, 2017 The race has already taken place.
USA / East South Central / Alabama / Lake Martin
Ultramarathon - 27 miles
Trail

Lake Martin 100

Lake Martin 50 Mile Trail Race
March 18, 2017 The race has already taken place.
USA / East South Central / Alabama / Lake Martin
Ultramarathon - 50 miles
Trail

Lt. J. C. Stone 50K Road UltraMarathon

March 18, 2017 The race has already taken place.
USA / Mid-Atlantic / Pennsylvania / North Park, Allegheny County
Ultramarathon - 50 kilometers
Road Running

Music City Trail Ultra

Music City Trail Ultra 50K
March 18, 2017 The race has already taken place.
USA / East South Central / Tennessee / Pegram
Ultramarathon - 50 kilometers
Hilly Trail

Northburn Station 100 miler Mountain Run

Northburn Station 100 km Mountain Run
March 18, 2017 Cancelled
New Zealand / Cromwell
Ultramarathon - 100 kilometers
Trail Mountain

Northburn Station 100 miler Mountain Run

Northburn Station 100 miler Mountain Run
March 18, 2017 Cancelled
New Zealand / Cromwell
Ultramarathon - 100 meters
Trail Mountain

Om Die Dam

Om Die Dam 50 km Marathon
March 18, 2017 The race has already taken place.
South Africa / Hartbeespoort
Ultramarathon - 50 kilometers
Road Running

Spring Equinox 50 Miler, 50K & 10 Miler

Spring Equinox 50K
March 18, 2017 The race has already taken place.
USA / East South Central / Mississippi / Meadville
Ultramarathon - 50 kilometers
Trail

Spring Equinox 50 Miler, 50K & 10 Miler

Spring Equinox 50 Miler
March 18, 2017 The race has already taken place.
USA / East South Central / Mississippi / Meadville
Ultramarathon - 50 miles
Trail

Terrapin Mountain 50K & 1/2 Marathon

Terrapin Mountain 50km
March 18, 2017 The race has already taken place.
USA / South Atlantic / Virginia / Sedalia
Ultramarathon - 50 kilometers
Trail Eco-x Sports