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.

3,303 races

PPC Matopos 33 Miler

33 Miler
April 03, 2016 The race has already taken place.
Zimbabwe / Matobo National Park
Ultramarathon - 33 miles

PPC Matopos 33 Miler

33 Miler Relay
April 03, 2016 The race has already taken place.
Zimbabwe / Matobo National Park
Ultramarathon - 33 miles
Relay

St. Croix Scenic 50

St. Croix Scenic 50 km
January 22, 2017 The race has already taken place.
Virgin Islands (USA) / Christiansted
Ultramarathon - 50 kilometers

St. Croix Scenic 50

St. Croix Scenic 50 Mile
January 22, 2017 The race has already taken place.
Virgin Islands (USA) / Christiansted
Ultramarathon - 50 miles
Relay

Tamdao Mountain Trail

TMT Ultra 70km
June 24, 2017 Race day in 3 months
Vietnam / Tam Đảo
Ultramarathon - 70 kilometers
Trail Mountain

Vietnam Mountain Marathon

100 km
September 23, 2017 Race day in 6 months
Vietnam / Sa pa
Ultramarathon - 100 kilometers
UTMB Qualifier Hilly Charity Package tour Trail Mountain Extreme

Vietnam Mountain Marathon

70 km
September 23, 2017 Race day in 6 months
Vietnam / Sa pa
Ultramarathon - 70 kilometers
UTMB Qualifier Hilly Charity Package tour Trail Mountain Extreme

Vietnam Victory Challenge Trail Run

50k
March 19, 2016 The race has already taken place.
Vietnam / Da Lat
Ultramarathon - 50 kilometers
Trail

Ultra Laguna de Urao

February 04, 2017 The race has already taken place.
Venezuela / Lagunillas
Ultramarathon - 65 kilometers
UTMB Qualifier Trail

Sundance Trail Run

Sundance 50K Trail Run
September 10, 2016 The race has already taken place.
USA / Mountain Region / Wyoming / Sundance
Ultramarathon - 50 kilometers
Trail Black Hills Runners Club Trail Running Series

Bighorn Mountain Wild and Scenic Trail Runs

Bighorn Trail 100 Mile Endurance Run
June 16, 2017 Race day in 3 months
USA / Mountain Region / Wyoming / Sheridan
Ultramarathon - 100 miles
UTMB Qualifier Trail Western States Qualifier

Bighorn Mountain Wild and Scenic Trail Runs

Bighorn Trail 50K Endurance Run
June 16, 2017 Race day in 3 months
USA / Mountain Region / Wyoming / Sheridan
Ultramarathon - 50 kilometers
Trail

Bighorn Mountain Wild and Scenic Trail Runs

Bighorn Trail 50 Mile Endurance Run
June 16, 2017 Race day in 3 months
USA / Mountain Region / Wyoming / Sheridan
Ultramarathon - 50 miles
Trail

Wyoming Marathon Races

Rocky Mountain 50k
May 29, 2016 The race has already taken place.
USA / Mountain Region / Wyoming / Laramie
Ultramarathon - 50 kilometers
Charity Road Running

El Vaquero Loco

El Vaquero Loco 50K
August 05, 2017 Race day in 4 months
USA / Mountain Region / Wyoming / Afton
Ultramarathon - 50 kilometers
Trail Mountain