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.

3,304 races

Beskidzka 160 Na

Beskidzka 160 Na - Short Distance
April 01, 2017 Race day in 6 days
Poland / Wisla
Ultramarathon - 45 kilometers
UTMB Qualifier Trail

Crown King Scramble 50 Km Trail Run

April 01, 2017 Race day in 6 days
USA / Mountain Region / Arizona / Lake Pleasant Regional Park
Ultramarathon - 50 kilometers
Trail Aravaipa Running

Fools 50K & 25K Trail Run

Fools 50K Trail Run
April 01, 2017 Race day in 6 days
USA / East North Central / Ohio / Cuyahoga Valley National Park, Peninsula
Ultramarathon - 50 kilometers
Trail Western Reserve Racing

Vale of Glamorgan Coastal Ultra Challenge

Full Course
April 01, 2017 Race day in 6 days
United Kingdom / Wales / Penarth
Ultramarathon - 30 miles
Walk Trail Run Walk Crawl

Georgia Death Race

April 01, 2017 Race day in 6 days
USA / South Atlantic / Georgia / Vogel State Park
Ultramarathon - 60 miles
Hilly Trail Run Bum Tours Western States Qualifier

Glasgow - Edinburgh Double Marathon

April 01, 2017 Race day in 6 days
United Kingdom / Scotland / Glasgow City / Glasgow
Ultramarathon - 55 miles

Hells Hills

Hells Hills 50 km Endurance Trail Run
April 01, 2017 Race day in 6 days
USA / West South Central / Texas / Smithville
Ultramarathon - 50 kilometers
Tejas Trails Trail

Hells Hills

Hells Hills 50 Mile Endurance Trail Run
April 01, 2017 Race day in 6 days
USA / West South Central / Texas / Smithville
Ultramarathon - 50 miles
Tejas Trails Trail

Inatel Piódão Trail Running

Inatel Piódão Trail Running - 50 km
April 01, 2017 Race day in 6 days
Portugal / Inatel Piódão
Ultramarathon - 50 kilometers

Old Goats 50 Mile Trail Race

Old Goats 50K Trail Race
April 01, 2017 Race day in 6 days
USA / Pacific / California / Cleveland National Forest
Ultramarathon - 50 kilometers
Trail Old Goat Trail Races

Old Goats 50 Mile Trail Race

Old Goats 50 Mile Trail Race
April 01, 2017 Race day in 6 days
USA / Pacific / California / Cleveland National Forest
Ultramarathon - 50 miles
Trail Old Goat Trail Races

Oxfam Intermón Spain - Girona

April 01, 2017 Race day in 6 days
Spain / Catalonia / Olot
Ultramarathon - 100 kilometers
Walk Charity Team Trail Oxfam Trailwalker

Rockin K Trail Runs

Rocking K Trail 50 Mile Run
April 01, 2017 Race day in 6 days
USA / West North Central / Kansas / Kanopolis State Park, Marquette
Ultramarathon - 50 miles
Trail Kansas Ultrarunner's Society (KUS)

Shotgun Trail Blast

Shotgun Trail Blast 50K
April 01, 2017 Race day in 6 days
USA / Pacific / Oregon / Marcola
Ultramarathon - 50 kilometers
Trail Eclectic Edge Racing

Silva Ursvik Ultra

Silva Ursvik Ultra - 45 km
April 01, 2017 Race day in 6 days
Sweden / Ursviks
Ultramarathon - 45 kilometers
Trail