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.

3,270 races

Run LOVit

LOVit 100 Mile
February 24, 2017 Race day in 1 day
USA / West South Central / Arkansas / Hot Springs
Ultramarathon - 100 miles
Trail

North Face Transgrancanaria

Transgrancanaria
February 24, 2017 Race day in 1 day
Spain / Canary Islands / Las Palmas
Ultramarathon - 125 kilometers
UTMB Qualifier Trail Western States Qualifier Ultra-Trail World Tour circuit Mountain

The Dunes 100

100 Miler
February 25, 2017 Race day in 2 days
USA / South Atlantic / Florida / Jupiter
Ultramarathon - 100 miles
Trail

The Dunes 100

100 Mile Team Relay
February 25, 2017 Race day in 2 days
USA / South Atlantic / Florida / Jupiter
Ultramarathon - 100 miles
Trail Relay

Trail Terras do Sicó

111 km
February 25, 2017 Race day in 2 days
Portugal / Condeixa-a-Nova
Ultramarathon - 111 kilometers
Trail

The Dunes 100

50 Miler
February 25, 2017 Race day in 2 days
USA / South Atlantic / Florida / Jupiter
Ultramarathon - 50 miles
Trail

Chena River to Ridge Endurance Race

Chena River to Ridge Endurance Race 45 Mile
February 25, 2017 Race day in 2 days
USA / Pacific / Alaska / Fairbanks
Ultramarathon - 45 miles
Trail Snow

Hashawha Hills 50 km Trail Run

February 25, 2017 Race day in 2 days
USA / South Atlantic / Maryland / Westminster
Ultramarathon - 50 kilometers
Trail

Run LOVit

LOVit 100k
February 25, 2017 Race day in 2 days
USA / West South Central / Arkansas / Hot Springs
Ultramarathon - 100 kilometers
Trail

Mount Cheaha 50K

February 25, 2017 Race day in 2 days
USA / East South Central / Alabama / Delta
Ultramarathon - 50 kilometers
Trail Pinhoti Trail Series

Black Mountain Marathon

Mount Mitchell Challenge
February 25, 2017 Race day in 2 days
USA / South Atlantic / North Carolina / Black Mountain
Ultramarathon - 40 miles
Trail

Old Ghost Ultra Marathon

February 25, 2017 Race day in 2 days
New Zealand / Westport
Ultramarathon - 85 kilometers
Trail Mountain Relay

Orange Curtain

Orange Curtain 100K
February 25, 2017 Race day in 2 days
USA / Pacific / California / Liberty Park, Cerritos
Ultramarathon - 100 kilometers
Road Running

Orange Curtain

Orange Curtain 50K Afternoon
February 25, 2017 Race day in 2 days
USA / Pacific / California / Liberty Park, Cerritos
Ultramarathon - 50 kilometers
Road Running

Orange Curtain

Orange Curtain 50K Morning
February 25, 2017 Race day in 2 days
USA / Pacific / California / Liberty Park, Cerritos
Ultramarathon - 50 kilometers
Road Running