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.

3,301 races

Duncan's Run-Hundred

100 km
April 01, 2017 Race day in 3 days
Australia / Victoria / Gippsland
Ultramarathon - 100 kilometers
Trail

NJ Ultra Festival

100K Trail Race
April 01, 2017 Race day in 3 days
USA / Mid-Atlantic / New Jersey / NJ State Fairgrounds, Augusta
Ultramarathon - 100 kilometers
NJ Trail Series Trail

NJ Ultra Festival

100M Trail Race
April 01, 2017 Race day in 3 days
USA / Mid-Atlantic / New Jersey / NJ State Fairgrounds, Augusta
Ultramarathon - 100 miles
NJ Trail Series Trail

The John Muir Way Ultra Marathon

2x25K Relay
April 01, 2017 Race day in 3 days
United Kingdom / Scotland / East Lothian / Dunbar
Ultramarathon - 50 kilometers
Trail Relay

The John Muir Way Ultra Marathon

50K
April 01, 2017 Race day in 3 days
United Kingdom / Scotland / East Lothian / Dunbar
Ultramarathon - 50 kilometers
Trail

Montaña de Oro

50km
April 01, 2017 Race day in 3 days
USA / Pacific / California / Los Osos
Ultramarathon - 50 kilometers
Trail Pacific Trail Runs

Kuching Ultra

50 km
April 01, 2017 Race day in 3 days
Malaysia / Kuching
Ultramarathon - 50 kilometers
Road Running

Duncan's Run-Hundred

50 km
April 01, 2017 Race day in 3 days
Australia / Victoria / Gippsland
Ultramarathon - 50 kilometers
Trail Relay

NJ Ultra Festival

50K Trail Race
April 01, 2017 Race day in 3 days
USA / Mid-Atlantic / New Jersey / NJ State Fairgrounds, Augusta
Ultramarathon - 50 kilometers
NJ Trail Series Trail

NJ Ultra Festival

50M Trail Race
April 01, 2017 Race day in 3 days
USA / Mid-Atlantic / New Jersey / NJ State Fairgrounds, Augusta
Ultramarathon - 50 miles
NJ Trail Series Trail

Kuching Ultra

70 km
April 01, 2017 Race day in 3 days
Malaysia / Kuching
Ultramarathon - 70 kilometers
Road Running

American River 50-mile Endurance Run

April 01, 2017 Race day in 3 days
USA / Pacific / California / Sacramento
Ultramarathon - 50 miles
Trail

Bergen Maratonkarusellen no3

Bergen Maratonkarusellen no3 - 1 1/2 Marathon
April 01, 2017 Race day in 3 days
Norway / Bergen
Ultramarathon - 63.300 kilometers
Bergen Maratonkarusellen

Bergen Maratonkarusellen no3

Bergen Maratonkarusellen no3 - Ultra 100km
April 01, 2017 Race day in 3 days
Norway / Bergen
Ultramarathon - 100 kilometers
Bergen Maratonkarusellen

Beskidzka 160 Na

Beskidzka 160 Na - Long Distance
April 01, 2017 Race day in 3 days
Poland / Wisla
Ultramarathon - 84 kilometers
UTMB Qualifier Trail