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.

3,272 races

Nilgiris 100

Nilgiris 50 km Women-Only Ultra
December 03, 2017 Race day in 6 months
India / Tamil Nadu / Ootacamund
Ultramarathon - 50 kilometers
Hilly Women-only GlobeRacers

Gede Pangrango 100

Gede Pangrango 100K
December 08, 2017 To be confirmed Race day in 7 months
Indonesia / Gede Pangrango
Ultramarathon - 100 kilometers
UTMB Qualifier Trail Mountain

Gede Pangrango 100

Gede Pangrango 300
December 08, 2017 To be confirmed Race day in 7 months
Indonesia / Gede Pangrango
Ultramarathon - 300 kilometers
UTMB Qualifier Trail Mountain

Gede Pangrango 100

Gede Pangrango 50K
December 08, 2017 To be confirmed Race day in 7 months
Indonesia / Gede Pangrango
Ultramarathon - 50 kilometers
UTMB Qualifier Trail Mountain

Gede Pangrango 100

Gede Pangrango 75K
December 08, 2017 To be confirmed Race day in 7 months
Indonesia / Gede Pangrango
Ultramarathon - 75 kilometers
UTMB Qualifier Trail Mountain

Brazos Bend 100

Brazos Bend 100 Miler
December 09, 2017 Race day in 7 months
USA / West South Central / Texas / Needville
Ultramarathon - 100 miles
Flat Fun Trail Fast Relay

Brazos Bend 100

Brazos Bend 50 Miler
December 09, 2017 Race day in 7 months
USA / West South Central / Texas / Needville
Ultramarathon - 50 miles
Flat Fun Trail Fast

Frozen Trail Runfest

Frozen Trail Runfest 50K
December 09, 2017 Race day in 7 months
USA / Pacific / Oregon / Buford Park, Mt Pisgah - Eugene
Ultramarathon - 50 kilometers
Trail

Nosy Be Trail

Nosy Be Trail - 60 km
December 09, 2017 Race day in 7 months
Madagascar / Hell-ville, Nosy Be
Ultramarathon - 60 kilometers
Hilly Trail Relay

Deception Pass

Deception Pass 50K
December 10, 2017 Race day in 7 months
USA / Pacific / Washington / Oak Harbor
Ultramarathon - 50 kilometers
Trail Rainshadow Running

6 Inch Trail Marathon

December 17, 2017 Race day in 7 months
Australia / Western Australia / North Dandalup
Ultramarathon - 46 kilometers
Hilly Trail

I Ran Marathons Christmas Lucky 12 days

50K
December 21, 2017 Race day in 7 months
USA / West South Central / Texas / San Antonio
Ultramarathon - 50 kilometers

Trail des Gueules Noires

53 km
December 23, 2017 Race day in 7 months
Belgium / Wallonia / Blegny
Ultramarathon - 53 kilometers
Trail

Western Ghats Ultra

100 km
December 24, 2017 Race day in 7 months
India / Maharashtra / Pune
Ultramarathon - 100 kilometers

Western Ghats Ultra

50 km
December 24, 2017 Race day in 7 months
India / Maharashtra / Pune
Ultramarathon - 50 kilometers