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.

3,271 races

Zumbro 100

Zumbro Midnight 50 Mile
April 08, 2017 The race has already taken place.
USA / West North Central / Minnesota / Zumbro Falls
Ultramarathon - 50 miles
Trail Night

Zermatt Marathon

Zermatt Ultra-Marathon
July 01, 2017 Race day in about 1 month
Switzerland / Valais / Zermatt
Ultramarathon - 45.595 kilometers
UTMB Qualifier Trail Mountain

Yurrebilla Trail 56km Ultra

September 24, 2017 Race day in 4 months
Australia / South Australia / Adelaide
Ultramarathon - 56 kilometers
Trail

Yukon Arctic Marathon

Yukon Arctic 300M
February 01, 2018 Race day in 8 months
Canada / Yukon / Whitehorse
Ultramarathon - 300 miles
Trail Snow

Yukon Arctic Marathon

Yukon Arctic 100M
February 01, 2018 Race day in 8 months
Canada / Yukon / Whitehorse
Ultramarathon - 100 miles
Trail Snow

Ultra Trail Tai Mo Shan

Yuen Long, Ta Shek Wu, Fo Tan
January 01, 2017 The race has already taken place.
Hong-Kong / Fo Tan
Ultramarathon - 50 kilometers
Trail

You Yangs Trail Running Festival

You Yangs 50K Trail Run
July 22, 2017 Race day in about 2 months
Australia / Victoria / You Yangs State Park, Little River
Ultramarathon - 50 kilometers

Youngstown Ultra Trail Classic

Youngstown Ultra Trail Classic 50K
September 17, 2016 The race has already taken place.
USA / East North Central / Ohio / Youngstown
Ultramarathon - 50 kilometers
Trail

Yeti Snakebite 50/50

August 27, 2016 The race has already taken place.
USA / South Atlantic / Georgia / Lithia Springs
Ultramarathon - 50 kilometers
Trail

Yellowstone-Teton Endurance Race

Yellowstone-Teton 50 Mile Endurance Race
No race in 2016
USA / Mountain Region / Montana / West Yellowstone
Ultramarathon - 50 miles
Road Running Dreamchasers

Yellowstone-Teton Endurance Race

Yellowstone-Teton 100-Mile Endurance Race
No race in 2016
USA / Mountain Region / Montana / West Yellowstone
Ultramarathon - 100 miles
Road Running Dreamchasers

Yankee Winter Trail Run

Yankee Winter Trail 50K
January 07, 2017 The race has already taken place.
USA / East North Central / Michigan / Middleville
Ultramarathon - 50 kilometers
Trail

Yankee Springs Trail Run

Yankee Springs Trail Double Marathon
June 03, 2017 Race day in 5 days
USA / East North Central / Michigan / Middleville
Ultramarathon - 84.390 kilometers
Trail

Yamacraw 50k/10k

Yamacraw 50k
April 08, 2017 The race has already taken place.
USA / East South Central / Kentucky / Stearns
Ultramarathon - 50 kilometers
Charity Trail

Yakima Skyline Rim 50k & 25k

Yakima Skyline Rim 50k
April 22, 2017 The race has already taken place.
USA / Pacific / Washington / Ellensburg
Ultramarathon - 50 kilometers
Trail Rainshadow Running