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.

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3,325 races

Town&Country Rennsteigquerung

Marathon
June 26, 2017 Race day in 1 day
Germany / Thuringia / Bad Salzungen
Ultramarathon - 44 kilometers

Thames Ring 250

June 28, 2017 To be confirmed Race day in 3 days
United Kingdom / England / West Berkshire / Streatley
Ultramarathon - 250 miles
Trail

Great Barrow Challenge - Summer Ten in 10.

Ultra (32miles) Day 1
June 29, 2017 Race day in 4 days
United Kingdom / England / Suffolk / Bury St Edmunds
Ultramarathon - 32 miles

UAI Ultra dos Anjos Internacional 235 km

135 km Hard
June 30, 2017 Race day in 5 days
Brazil / Passa Quatro
Ultramarathon - 135 kilometers
Relay

UAI Ultra dos Anjos Internacional 235 km

235 km X-Hard
June 30, 2017 Race day in 5 days
Brazil / Passa Quatro
Ultramarathon - 235 kilometers
Relay

UAI Ultra dos Anjos Internacional 235 km

65 km Easy
June 30, 2017 Race day in 5 days
Brazil / Passa Quatro
Ultramarathon - 65 kilometers
Relay

UAI Ultra dos Anjos Internacional 235 km

95 km Medium
June 30, 2017 Race day in 5 days
Brazil / Passa Quatro
Ultramarathon - 95 kilometers
Relay

Raid Golf du Morbihan

Grand Raid 56 Golfe du Morbihan
June 30, 2017 Race day in 5 days
France / Brittany / Morbihan / Vannes
Ultramarathon - 177 kilometers
UTMB Qualifier Trail

Great Barrow Challenge - Summer Ten in 10.

Ultra (32miles) Day 2
June 30, 2017 Race day in 5 days
United Kingdom / England / Suffolk / Bury St Edmunds
Ultramarathon - 32 miles

Lovers Leap of Faith

100K
July 01, 2017 Race day in 6 days
USA / Pacific / California / Strawberry
Ultramarathon - 100 kilometers

Thüringen ULTRA

100 km
July 01, 2017 Race day in 6 days
Germany / Thuringia / Fröttstädt
Ultramarathon - 100 kilometers
Relay

Lake District's ULTIMATE Trails Challenge

100 km
July 01, 2017 Race day in 6 days
United Kingdom / England / Cumbria / Brockhole
Ultramarathon - 110 kilometers
UTMB Qualifier Trail Mountain