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

Muraoka Ultra Marathon

Muraoka Ultra Marathon - 66K
September 24, 2017 Race day in 8 months
Japan / Muraoka
Ultramarathon - 66 kilometers
Road Running

Muraoka Ultra Marathon

Muraoka Ultra Marathon - 88K
September 24, 2017 Race day in 8 months
Japan / Muraoka
Ultramarathon - 88 kilometers
Road Running

Reebok Ragnar Michigan

September 29, 2017 Race day in 8 months
USA / East North Central / Michigan / Muskegon
Ultramarathon - 200 miles
Relay

J&J Race and Trail Running Reunion

100K
September 30, 2017 Race day in 8 months
USA / West South Central / Texas / Rocksprings
Ultramarathon - 100 kilometers
Tejas Trails

FlatRock 50/25K

50K
September 30, 2017 Race day in 8 months
USA / West North Central / Kansas / Independence
Ultramarathon - 50 kilometers

J&J Race and Trail Running Reunion

50K
September 30, 2017 Race day in 8 months
USA / West South Central / Texas / Rocksprings
Ultramarathon - 50 kilometers
Tejas Trails Trail

J&J Race and Trail Running Reunion

50 Miler
September 30, 2017 Race day in 8 months
USA / West South Central / Texas / Rocksprings
Ultramarathon - 50 miles
Tejas Trails

Market to Market Relay Series Nebraska

September 30, 2017 Race day in 8 months
USA / West North Central / Nebraska / Omaha
Ultramarathon - 78 miles
Team Urban Trail Trail Relay

Trail de l'Odon

66 km
October 01, 2017 Race day in 8 months
France / Lower Normandy / Calvados / Baron sur Odon
Ultramarathon - 66 kilometers
Trail

Trail des Rois Maudits

Trm50 - relai 2
October 01, 2017 Race day in 8 months
France / Upper Normandy / Eure / Poses
Ultramarathon - 50 kilometers
Trail Relay

Trail des Rois Maudits

Trm50 - solo
October 01, 2017 Race day in 8 months
France / Upper Normandy / Eure / Poses
Ultramarathon - 50 kilometers
Trail

Royal Penguin Ultra Marathon

October 05, 2017 Race day in 9 months
Nepal / Namche Bazaar
Ultramarathon - 60 kilometers
Trail Mountain

100 Miles Sud de France

100 Miles Sud de France
October 06, 2017 Race day in 9 months
France / Languedoc-Roussillon / Pyrénées-Orientales / Font-Romeu
Ultramarathon - 100 miles
Trail Mountain Challenge Ultra Mountain National Tour

The Malnad Ultra

110 km
October 07, 2017 Race day in 9 months
India / Karnataka / Ballavara
Ultramarathon - 110 kilometers
Trail

Oregon Coast 50K & 30K

50K
October 07, 2017 Race day in 9 months
USA / Pacific / Oregon / Yachats
Ultramarathon - 50 kilometers
Trail Rainshadow Running