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 Colorado River Run, Fifth Street Cross Black Friday 100 and Bosque Bigfoot Trail Runs.
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.
Colorado River Run
USACedar Creek, Texas
Trail races along the Colorado River at McKinney Roughs, with long ultras on Friday and shorter races on Saturday.
Date listed · latest organiser confirmation not yet checked.
Fifth Street Cross Black Friday 100
USAEmmaus, Pennsylvania
Black Friday running races on repeated short trail loops at the Fifth Street Cross course, alongside separate cycling events.
Date listed · latest organiser confirmation not yet checked.
Bosque Bigfoot Trail Runs
USAAlbuquerque, New Mexico
Trail races through Albuquerque’s riverside bosque, using singletrack and jeep roads among the cottonwoods.
Date listed · latest organiser confirmation not yet checked.
Boundiful Endurance Runs
USAHemet, California
Fixed-distance and timed endurance running on a hard-packed dirt loop through a Southern California fruit and nut farm.
Date listed · latest organiser confirmation not yet checked.
Squatchy Leftovers
USAWest Orange, New Jersey
Trail races on a loop combining carriage roads and rocky singletrack in South Mountain Reservation, supporting Bigger Than The Trail.
Date listed · latest organiser confirmation not yet checked.
Turkey Burn Ultra
USAClermont, Florida
Thanksgiving weekend trail races through Lake Louisa State Park’s sand hills, forest and lakeside terrain.
Date listed · latest organiser confirmation not yet checked.
Blood Rock
USAPelham, Alabama
Long trail races exploring Oak Mountain State Park, with steep climbs and a race base beside Tranquility Lake.
Date listed · latest organiser confirmation not yet checked.
Anza Borrego Cuyamaca 50 Mile Run
USAJulian, California
A point-to-point trail ultra from the mountains near Julian to the desert finish at Stagecoach Trails RV Resort.
Date listed · latest organiser confirmation not yet checked.
Brazos Bend 100
USANeedville, Texas
Flat trail races through Brazos Bend State Park, with looped ultras, a marathon, a half marathon and a children’s kilometre.
Date listed · latest organiser confirmation not yet checked.
Calero Trail Run Winter
USASan Jose, California
Winter trail races on Calero County Park’s singletrack and rolling dirt paths, with several distances from one mile to an ultra.
Date listed · latest organiser confirmation not yet checked.
Cloudland Canyon Trail Races
USARising Fawn, Georgia
A weekend of trail races through Cloudland Canyon, with waterfall views, steep canyon climbs and shorter Sunday options.
Date listed · latest organiser confirmation not yet checked.
Colossal Vail 50/50
USAVail, Arizona
High-desert trail races on the Arizona Trail, based at Colossal Cave Mountain Park with daytime and night shorter options.
Date listed · latest organiser confirmation not yet checked.
Crooked Creek Ultra Trail Race
USAShepherdsville, Kentucky
A trail running weekend on wooded hills at Camp Crooked Creek, with ultras and daytime and night marathon options.
Date listed · latest organiser confirmation not yet checked.
Devil Dog Ultras
USATriangle, Virginia
Looped ultras through Prince William Forest Park, combining wooded singletrack, rolling hills and short fire-road sections.
· Entry closed
Date listed · latest organiser confirmation not yet checked.
Festivus Trail Run
USAMiddleburg, Florida
A holiday trail race weekend in Jennings State Forest, based on repeated loops through pine and palmetto woodland.
Date listed · latest organiser confirmation not yet checked.
HAROC Hanging Rock Challenge
USADanbury, North Carolina
Technical trail races among Hanging Rock State Park’s cliffs, waterfalls and rocky woodland paths.
Date listed · latest organiser confirmation not yet checked.
Isle du Bois Trail Run
USAPilot Point, Texas
Loop races on singletrack beside Lake Ray Roberts, mixing runnable stretches with rocks and roots.
Date listed · latest organiser confirmation not yet checked.
Jackson County Ultras
USABrownstown, Indiana
Rugged trail races in Jackson-Washington State Forest with a start and finish at PYOCA Camp and Retreat Center.
Date listed · latest organiser confirmation not yet checked.
Lake Norman State Park Trail Race
USATroutman, North Carolina
Trail races on rolling singletrack through Lake Norman State Park, starting and finishing behind the visitor centre.
Date listed · latest organiser confirmation not yet checked.
Last Chance Ultra
USARogersville, Missouri
Looped ultras on private land near Springfield, with trails, gravel and short paved sections plus a Sunday ten-mile race.
Date listed · latest organiser confirmation not yet checked.
Loup Garou Trail Run
USAVille Platte, Louisiana
Trail races through cypress swamps, hardwood forest and pine woods at Chicot State Park, with long wooden bridges and singletrack.
Date listed · latest organiser confirmation not yet checked.
McDowell Mountain Frenzy
USAFountain Hills, Arizona
Desert trail races through McDowell Mountain Regional Park, starting from the Competitive Track area.
Date listed · latest organiser confirmation not yet checked.
Mosaic Trail Race
USABurnet, Texas
Trail races at Canyon of the Eagles on Lake Buchanan, with distances for adults and a one-mile youth race.
Date listed · latest organiser confirmation not yet checked.
OTHTC High Desert Ultra
USARidgecrest, California
Desert trail races on rolling dirt roads above Ridgecrest, starting and finishing at Cerro Coso Community College.
Date listed · latest organiser confirmation not yet checked.
San Joaquin River Trail
USAFriant, California
Trail races following the hills beside Millerton Lake and the San Joaquin River, starting at South Finegold Picnic Area.
Date listed · latest organiser confirmation not yet checked.
Sawmill Trail Runs
USAPine, Colorado
Winter trail races through Staunton State Park’s meadows, forests and granite outcrops near Pine.
Date listed · latest organiser confirmation not yet checked.
TARC Winter Classic
USAStoneham, Massachusetts
Technical trail races on the Skyline Trail at Middlesex Fells Reservation, using repeated eight-mile loops.
· Entry closed
Date listed · latest organiser confirmation not yet checked.
The Guv’nor Frozen 50
USADodgeville, Wisconsin
Winter trail races through Governor Dodge State Park, with three distances on wooded and open park trails.
Date listed · latest organiser confirmation not yet checked.
The Hitchcock Experience
USAHoney Creek, Iowa
Winter trail races on the hills of Hitchcock Nature Center, including a night-start 50-miler and a two-part 101K challenge.
Date listed · latest organiser confirmation not yet checked.
Pine Mountain Trail Run
USAPine Mountain, Georgia
Rocky woodland trail races in F. D. Roosevelt State Park, with four in-person distances for the event’s 46th anniversary.
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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