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.

3,272 races

Skydive Ultra Run

Skydive Ultra 100M Run
January 28, 2017 Race day in 6 days
USA / South Atlantic / Florida / Clewiston
Ultramarathon - 100 miles

Skydive Ultra Run

Skydive Ultra 150M Run
January 28, 2017 Race day in 6 days
USA / South Atlantic / Florida / Clewiston
Ultramarathon - 150 miles

Skydive Ultra Run

Skydive Ultra 200M Run
January 28, 2017 Race day in 6 days
USA / South Atlantic / Florida / Clewiston
Ultramarathon - 200 miles

Skydive Ultra Run

Skydive Ultra 50 km Run
January 28, 2017 Race day in 6 days
USA / South Atlantic / Florida / Clewiston
Ultramarathon - 50 kilometers

Skydive Ultra Run

Skydive Ultra 50M Run
January 28, 2017 Race day in 6 days
USA / South Atlantic / Florida / Clewiston
Ultramarathon - 50 miles

Kahtoola Bigfoot Snowshoe Festival

Snowshoe Festival 50K
January 28, 2017 Race day in 6 days
USA / Mountain Region / Utah / Midway
Ultramarathon - 50 kilometers
Snow

Trilhos dos Abutres

Ultra Trilhos dos Abutres
January 28, 2017 Race day in 6 days
Portugal / Miranda do Corvo
Ultramarathon - 50 kilometers
UTMB Qualifier Trail

Aïga Trail

53 km
January 29, 2017 Race day in 7 days
France / Aquitaine / Dordogne / Cubjac
Ultramarathon - 53 kilometers
Trail

Aïga Trail

53 km Relais (17+26+10)
January 29, 2017 Race day in 7 days
France / Aquitaine / Dordogne / Cubjac
Ultramarathon - 53 kilometers
Trail Relay

Dark Star River Marathon

January 29, 2017 To be confirmed Race day in 7 days
United Kingdom / England / West Sussex / Shoreham-by-Sea
Ultramarathon - 28.200 miles
Trail

La Ronde Givrée

January 29, 2017 Race day in 7 days
France / Midi-Pyrénées / Tarn / Castres
Ultramarathon - 62 kilometers
Relay

Ronda Ghibellina

Ronda Ghibellina - 43 km
January 29, 2017 Race day in 7 days
Italy / Tuscany / Castiglion Fiorentino
Ultramarathon - 43 kilometers
UTMB Qualifier Trail

Winter Buckeye Trail

Winter Buckeye Trail 50K
January 29, 2017 Race day in 7 days
USA / East North Central / Ohio / Peninsula
Ultramarathon - 50 kilometers
Trail

Arrowhead 135 mile Winter Ultramarathon

January 30, 2017 Race day in 8 days
USA / West North Central / Minnesota / International Falls
Ultramarathon - 135 miles
Trail Iditarod Trail Invitational Qualifier Snow

Athens International Ultramarathon Festival

1000K
February 02, 2017 Race day in 11 days
Greece / Athens
Ultramarathon - 1000 kilometers
Charity