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

Humani'Trail Les Diablerets

Trail du Tigre
September 23, 2017 Race day in 6 months
Switzerland / Valais / Les Diablerets
Ultramarathon - 56 kilometers
UTMB Qualifier Charity Trail Mountain

Humani'Trail Les Diablerets

Trail du Tigre en Relais
September 23, 2017 Race day in 6 months
Switzerland / Valais / Les Diablerets
Ultramarathon - 57 kilometers
Charity Trail Mountain Relay

Trails 4 Tails Ultra Run

September 23, 2017 Race day in 6 months
USA / Mid-Atlantic / Pennsylvania / Hanover
Ultramarathon - 40 miles

Flagstaff to Grand Canyon Stagecoach Line 100 mile Ultra & Relay

Ultra 50K
September 23, 2017 Race day in 6 months
USA / Mountain Region / Arizona / Flagstaff
Ultramarathon - 50 kilometers
UTMB Qualifier Trail Mountain Relay

Ultra Pirineu

Ultra Pirineu
September 23, 2017 Race day in 6 months
Spain / Catalonia / Bagà
Ultramarathon - 103 kilometers
Trail Mountain

Vermont 50 Ultra Run

50 Km Run
September 24, 2017 Race day in 6 months
USA / New England / Vermont / Brownsville
Ultramarathon - 50 kilometers

Vermont 50 Ultra Run

50 Mile Run
September 24, 2017 Race day in 6 months
USA / New England / Vermont / Brownsville
Ultramarathon - 50 miles

Muraoka Ultra Marathon

Muraoka Ultra Marathon - 100K
September 24, 2017 Race day in 6 months
Japan / Muraoka
Ultramarathon - 100 kilometers
Road Running

Muraoka Ultra Marathon

Muraoka Ultra Marathon - 44K
September 24, 2017 Race day in 6 months
Japan / Muraoka
Ultramarathon - 44 kilometers
Road Running

Muraoka Ultra Marathon

Muraoka Ultra Marathon - 66K
September 24, 2017 Race day in 6 months
Japan / Muraoka
Ultramarathon - 66 kilometers
Road Running

Muraoka Ultra Marathon

Muraoka Ultra Marathon - 88K
September 24, 2017 Race day in 6 months
Japan / Muraoka
Ultramarathon - 88 kilometers
Road Running

Yurrebilla Trail 56km Ultra

September 24, 2017 Race day in 6 months
Australia / South Australia / Adelaide
Ultramarathon - 56 kilometers
Trail

Nordmarka Ultra Challenge

200K
September 28, 2017 Race day in 6 months
Norway / Grua
Ultramarathon - 200 kilometers
Trail

Beskidy Ultra Trail

260K
September 28, 2017 Race day in 6 months
Poland / Bielsko Biala
Ultramarathon - 260 kilometers
UTMB Qualifier Trail Mountain

Nordmarka Ultra Challenge

100K
September 29, 2017 Race day in 6 months
Norway / Grua
Ultramarathon - 100 kilometers
Trail