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.

3,258 races

Colonial200 Relay

April 28, 2017 Race day in 2 days
USA / South Atlantic / Virginia / Charlottesville
Ultramarathon - 200 miles
Relay

Doliho Ultra-Marathon

April 28, 2017 Race day in 2 days
Greece / Delphi
Ultramarathon - 255 kilometers
UTMB Qualifier Hilly

HeXenStieg Ultralauf

HeXenStieg Ultralauf
April 28, 2017 Race day in 2 days
Germany / Lower Saxony / Osterode
Ultramarathon - 219 kilometers
UTMB Qualifier Hilly Trail

Salt Flats 100 Mile Endurance Run

Salt Flats 100
April 28, 2017 Race day in 2 days
USA / Mountain Region / Utah / Wendover
Ultramarathon - 100 miles
Trail

Salt Flats 100 Mile Endurance Run

Salt Flats 50K
April 28, 2017 Race day in 2 days
USA / Mountain Region / Utah / Wendover
Ultramarathon - 50 kilometers
Trail

Salt Flats 100 Mile Endurance Run

Salt Flats 50 Miles
April 28, 2017 Race day in 2 days
USA / Mountain Region / Utah / Wendover
Ultramarathon - 50 miles
Trail

Canyons 50K Trail Run

100K
April 29, 2017 Race day in 3 days
USA / Pacific / California / Foresthill
Ultramarathon - 100 kilometers
Trail Western States Qualifier Mountain

C.U.R.E Ultra's

100K
April 29, 2017 Race day in 3 days
USA / Mountain Region / Colorado / Chatfield State Park, Littleton
Ultramarathon - 100 kilometers
Trail

Altra100

100 km
April 29, 2017 Race day in 3 days
Philippines / Banaue
Ultramarathon - 102 kilometers

100 Ultra trail Vipava Valley

110 km
April 29, 2017 Race day in 3 days
Slovenia / Ajdovščina/Vipava
Ultramarathon - 106 kilometers
Trail

Bretagne Ultra Trail

118 km
April 29, 2017 Race day in 3 days
France / Brittany / Morbihan / Quelven en Guern
Ultramarathon - 118 kilometers
UTMB Qualifier Hilly Trail

Canyons 50K Trail Run

50K
April 29, 2017 Race day in 3 days
USA / Pacific / California / Foresthill
Ultramarathon - 50 kilometers
Trail Mountain

C.U.R.E Ultra's

50K
April 29, 2017 Race day in 3 days
USA / Mountain Region / Colorado / Chatfield State Park, Littleton
Ultramarathon - 50 kilometers
Trail

The North Face Endurance Challenge Washington DC

50K
April 29, 2017 Race day in 3 days
USA / South Atlantic / Virginia / Algonkian Regional Park, Sterling
Ultramarathon - 50 kilometers
Trail The North Face Endurance Challenge

100 Ultra trail Vipava Valley

50 km
April 29, 2017 Race day in 3 days
Slovenia / Ajdovščina/Vipava
Ultramarathon - 50 kilometers
Trail