Trail ultramarathons in the United States
Find trail ultramarathons in the United States. Compare 330 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 Beast of the East 100, Bell Ringer Trail Run and Doomsday.
Narrow your search to Texas, California and Arizona, or browse the other locations below.
Compare running races by distance, date and surface, from shorter road events to trail races and ultras.
374 listed events · 330 with upcoming dates
Upcoming ultramarathons
330 matching events, earliest date first. Entry availability is shown separately.
Beast of the East 100
USAKings Mountain, North Carolina
Mountain trail races through Crowders Mountain State Park, starting and finishing at Crowders Ridge.
Date listed · latest organiser confirmation not yet checked.
Bell Ringer Trail Run
USABurns, Tennessee
Woodland trail races in Montgomery Bell State Park with three distances from the hotel parking area.
Date listed · latest organiser confirmation not yet checked.
Doomsday
USACool, California
Trail races from the Cool Staging Area, with a 50K ultra and half marathon through the surrounding foothills.
Date listed · latest organiser confirmation not yet checked.
Magnus Gluteus Maximus
USAClifton, Virginia
A low-key trail 50K on the Bull Run–Occoquan Trail from Hemlock Overlook Regional Park.
· Entry closed
Date listed · latest organiser confirmation not yet checked.
MCW Holmdel Classic
USAHolmdel, New Jersey
Charity trail races on repeated loops through Holmdel Park, with approximate ultra, half-marathon and single-loop options.
Date listed · latest organiser confirmation not yet checked.
PhoMo 50K
USAPhoenix, Arizona
A self-navigated trail ultra through the rocky Phoenix Mountain Preserves, starting and finishing at Shadow Rock Church.
Date listed · latest organiser confirmation not yet checked.
Spirit of Syllamo
USANorfork, Arkansas
Rugged ultras through the Sylamore district of the Ozark–St. Francis National Forest, starting beside the White River.
Date listed · latest organiser confirmation not yet checked.
Mel Williams Memorial Seashore 50K
USAVirginia Beach, Virginia
A two-loop trail ultra through First Landing State Park in memory of Mel Williams.
Date listed · latest organiser confirmation not yet checked.
Palmetto Bluff Buffalo Run
USABluffton, South Carolina
Looped trail races at Palmetto Bluff, with three solo distances and relay options for the longer races.
Date listed · latest organiser confirmation not yet checked.
Ancient Oaks 100
USATitusville, Florida
A low-key 100-mile trail race on repeated loops through the Enchanted Forest Nature Sanctuary.
· Entry closed
Date listed · latest organiser confirmation not yet checked.
Lookout Mountain Trail Race
USALookout Mountain, Georgia
Trail races from Covenant College through the terrain around Lookout Mountain.
Date listed · latest organiser confirmation not yet checked.
Naked Nick
USALeesport, Pennsylvania
Winter trail races on the south side of Blue Marsh Lake, with one or two laps of a woodland and gravel course.
Date listed · latest organiser confirmation not yet checked.
Woodside Ramble
USAWoodside, California
Trail races through the redwood forest and hills of Huddart County Park.
Date listed · latest organiser confirmation not yet checked.
Jupiter Ridge Sand Spur
USAJupiter, Florida
Sand-dune trail races at Jupiter Ridge, including a 30K night race.
Date listed · latest organiser confirmation not yet checked.
Recover From the Holidays 50K
USAHuntsville, Alabama
A low-key 50K on rolling grass loops in Huntsville.
Date listed · latest organiser confirmation not yet checked.
Run Undead Ultra Trail Party
USAPelham, Alabama
New Year trail races on a five-mile loop at Oak Mountain State Park.
Date listed · latest organiser confirmation not yet checked.
Canyon of the Eagles New Year’s Trail Challenge
USABurnet, Texas
Two days of New Year trail races on the limestone bluffs around Canyon of the Eagles.
Date listed · latest organiser confirmation not yet checked.
Just Survive 125
USAHobe Sound, Florida
A bucket-supported out-and-back ultra from Hobe Sound Beach to Lake Okeechobee and back.
Date listed · latest organiser confirmation not yet checked.
Tuscobia Winter Ultra
USARice Lake, Wisconsin
Winter endurance races on the Tuscobia State Trail in northern Wisconsin.
· Entry closed
Date listed · latest organiser confirmation not yet checked.
Croom Zoom
USABrooksville, Florida
Trail races through the oak hammocks and shaded terrain of Croom Park.
Date listed · latest organiser confirmation not yet checked.
Hacienda Hills Trail Run – Winter
USASan Jose, California
Winter trail races through the hills of Almaden Quicksilver County Park.
Date listed · latest organiser confirmation not yet checked.
Wild Azalea Trail Challenge
USAAlexandria, Louisiana
Trail races through the hills and pine forest of the Wild Azalea Trail.
Date listed · latest organiser confirmation not yet checked.
Willis River
USACumberland, Virginia
Low-key trail races through Bear Creek Lake State Park and the Willis River trails.
Date listed · latest organiser confirmation not yet checked.
Frozen: H3
USABethera, South Carolina
Winter trail races on the forest paths and dirt roads of the Jericho Horse Trail.
Date listed · latest organiser confirmation not yet checked.
Angela Ivory Memorial Runs
USAFelton, Delaware
Community-supported distance and timed races on the trails around Killens Pond.
Date listed · latest organiser confirmation not yet checked.
Bandera Endurance Trail Race
USABandera, Texas
A weekend of rugged trail races through the Texas Hill Country.
Date listed · latest organiser confirmation not yet checked.
Frosty Fifty Trail Races
USAWinston-Salem, North Carolina
Trail races on the packed dirt and gravel paths around Salem Lake, with a Friday night 5K.
Date listed · latest organiser confirmation not yet checked.
Frozen Gnome
USACrystal Lake, Illinois
Winter trail races on a challenging 10K loop through Veteran Acres and Sterne’s Woods.
Date listed · latest organiser confirmation not yet checked.
Frozen Sasquatch
USACharleston, West Virginia
Winter trail races through Kanawha State Forest.
Date listed · latest organiser confirmation not yet checked.
Great Scorpion Trail Run
USAMeridian, Mississippi
Trail races on the singletrack and jeep trails of Bonita Lakes Park.
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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