Explore by location
Trail 100k events in North America
Compare trail 100k events across North America and choose where to compete next. Compare 75 upcoming events by date and location. Open a race guide for the course, recorded editions and official entry information where available.
Events to explore include Kaniksu Trail Runs, Ultra Trail Whistler by UTMB and Silverheels Trail Runs.
Narrow your search to United States and Canada.
Compare running races by distance, date and surface, from shorter road events to trail races and ultras.
80 listed events · 75 with upcoming dates
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Upcoming 100k events
75 matching events, earliest date first. Entry availability is shown separately.
Kaniksu Trail Runs
USAFrater Lake, Washington
Mountain trail races in the Lower Selkirk Mountains from Frater Lake.
Date listed · latest organiser confirmation not yet checked.
Ultra Trail Whistler by UTMB
CANCreekside Plaza
Ultra Trail Whistler by UTMB — an official UTMB World Series Event.
Date listed · latest organiser confirmation not yet checked.
Silverheels Trail Runs
USAComo, Colorado
High-altitude trail and dirt-road races around Como and the South Park Valley.
· Status TBC
Date listed · latest organiser confirmation not yet checked.
Siskiyou Out Back Trail Runs
USAAshland, Oregon
Mountain trail races around Ashland and the Siskiyou Crest.
Date listed · latest organiser confirmation not yet checked.
Vero Beach Octopus Ultra
USAVero Beach, Florida
Ultras through the exposed and shaded trails around Vero Beach.
Date listed · latest organiser confirmation not yet checked.
Rise in the Pines
USASmithville, Texas
Loop trail races through the pine woods of Rocky Hill Ranch.
Date listed · latest organiser confirmation not yet checked.
Lost Sierra Endurance Race
USADownieville, California
Mountain trail races through the northern Sierra Nevada around Downieville.
Date listed · latest organiser confirmation not yet checked.
Badger Trail Races by Ten Junk Miles Racing
USABelleville, Wisconsin
Rail-trail races on the Badger State and Jane Addams trails.
Date listed · latest organiser confirmation not yet checked.
Ultra-Trail du Fjord-du-Saguenay
CANQuébec
Ultra-Trail du Fjord-du-Saguenay in Bas-Saguenay, Canada.
Date listed · latest organiser confirmation not yet checked.
Olympic Mountains Trail Races
USAQuilcene, Washington
Mountain trail races through the Olympic National Forest near Quilcene.
· Status TBC
Date listed · latest organiser confirmation not yet checked.
Shawnee Hills Trail Races
USAOzark, Illinois
Technical trail ultras through the sandstone hills and forests around Camp Ondessonk.
Date listed · latest organiser confirmation not yet checked.
Wildcat Ultras
USAPensacola, Florida
Ultras on a flat grass and dirt loop at the Escambia County Equestrian Center.
· Status TBC
Date listed · latest organiser confirmation not yet checked.
Pine Creek Challenge
USAWellsboro, Pennsylvania
Out-and-back endurance races on the Pine Creek Rail Trail.
· Status TBC
Date listed · latest organiser confirmation not yet checked.
Grindstone Trail Running Festival
USANatural Chimneys Park, VA
Grindstone Trail Running Festival — an official UTMB World Series Event.
· Status TBC
Date listed · latest organiser confirmation not yet checked.
Sangre de Cristo Trail Festival
USAWestcliffe, Colorado
A mountain trail festival near Westcliffe with ultras on Saturday and shorter races on Sunday.
· Status TBC
Date listed · latest organiser confirmation not yet checked.
Race archive
Past races and previous editions
Looking back at a race? Browse the guides below for recorded editions. This section also includes events awaiting a new date and cancelled editions. Previous editions of races in the upcoming calendar are available through their race guides above.
Open the race archive to browse past events and races awaiting a new date.
View full race archive (5) →