Worldwide 2016 – 2017 Ultramarathon Calendar

Looking for a comprehensive guide to 2016 – 2017 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.

3,145 races

Cloudsplitter 100

Cloudsplitter 100K
2016-10-01
USA / East South Central / Kentucky / Pine Mountain
Ultramarathon - 100 kilometers

Cloudsplitter 100

Cloudsplitter 100 Mile
2016-10-01
USA / East South Central / Kentucky / Pine Mountain
Ultramarathon - 100 miles

Cloudsplitter 100

Cloudsplitter 50K
2016-10-01
USA / East South Central / Kentucky / Pine Mountain
Ultramarathon - 50 kilometers

Rambler 120 Team Challenge

Coed Relay (5-8 Person Team) (At least 1 DOD ID Cardholder)
2016-10-01
USA / West South Central / Texas / Canyon Lake
Ultramarathon - 30 miles
Relay

Rambler 120 Team Challenge

Coed Xtreme (4 Person Team) (At least 1 DOD ID Cardholder)
2016-10-01
USA / West South Central / Texas / Canyon Lake
Ultramarathon - 30 miles

Cuyamaca 100K Endurance Run

2016-10-01
USA / Pacific / California / Cuyamaca Rancho State Park
Ultramarathon - 100 kilometers
UTMB Qualifier Trail Western States Qualifier

Rambler 120 Team Challenge

Female Relay (5-8 Person Team) (At least 1 DOD ID Cardholder)
2016-10-01
USA / West South Central / Texas / Canyon Lake
Ultramarathon - 30 miles
Relay

Rambler 120 Team Challenge

Female Xtreme (4 Person Team) (At least 1 DOD ID Cardholder)
2016-10-01
USA / West South Central / Texas / Canyon Lake
Ultramarathon - 30 miles

Flagstaff Endurance Runs

Flagstaff 56K Endurance Run
2016-10-01
USA / Mountain Region / Arizona / Coconino National Forest, Flagstaff
Ultramarathon - 56 kilometers
Trail Aravaipa Running Mountain

Flagstaff Sky Race

Flagstaff Sky Race 55K
2016-10-01
USA / Mountain Region / Arizona / Flagstaff
Ultramarathon - 55 kilometers
Trail Mountain

Foothills 50K Frenzy

2016-10-01
USA / Mountain Region / Idaho / Fort Boise
Ultramarathon - 50 kilometers
Trail

Gower Ultra 50

2016-10-01
United Kingdom / Wales / Llanmadoc
Ultramarathon - 50 miles
Walk Trail Run Walk Crawl

Gunung 5 Nuang

2016-10-01
Malaysia / Mt Nuang
Ultramarathon - 100 kilometers
UTMB Qualifier Trail Mountain

Headwaters Ultra

Headwaters Ultra - 50K
2016-10-01
USA / Pacific / California / Mount Shasta City
Ultramarathon - 50 kilometers

Iron Horse Ultra 100 (CAN)

Iron Horse Ultra 100 Km (CAN)
2016-10-01
Canada / Alberta / St-Paul
Ultramarathon - 100 kilometers
Trail