Trail 100mi events in the United States
Find trail 100mi events in the United States. Compare 76 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 Eagle Up Ultra, Weld Your Mettle Running Festival and Froggy Mountain 100.
Narrow your search to California, Florida and Texas, or browse the other locations below.
Compare running races by distance, date and surface, from shorter road events to trail races and ultras.
86 listed events · 76 with upcoming dates
Upcoming 100mi events
76 matching events, earliest date first. Entry availability is shown separately.
Eagle Up Ultra
USACanal Fulton, Ohio
Endurance races on a flat limestone towpath loop from St Helena Park.
Date listed · latest organiser confirmation not yet checked.
Weld Your Mettle Running Festival
USAEaton, Colorado
Loop running races and timed endurance challenges near Eaton.
Date listed · latest organiser confirmation not yet checked.
Froggy Mountain 100
USAGalax, Virginia
Mountain ultras on a steep one-mile private forest trail loop.
Date listed · latest organiser confirmation not yet checked.
Western States Endurance Run
USAOlympic Valley, California
The world’s oldest 100-mile trail race, from Olympic Valley to Auburn.
· Status TBC
Date listed · latest organiser confirmation not yet checked.
Hardrock Hundred
USASilverton, Colorado
High-altitude 100-mile loop through the San Juan Mountains.
· 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.
Devil's Gulch
USAWenatchee, Washington
Mountain trail ultras and a half marathon from Mission Ridge.
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.
Standhope Ultra Challenge
USAKetchum, Idaho
Remote high-altitude trail races in Idaho’s Pioneer Mountains.
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.
Burning River Endurance Run
USACuyahoga Falls, Ohio
Ultras and a marathon through the Cuyahoga Valley and Summit Metro Parks.
· 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.
Mogollon Monster
USAPine, Arizona
Mountain trail races around the Mogollon Rim.
· 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.
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.
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