Ultramarathons in the United States
Find ultramarathons in the United States. Compare 310 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 Fifth Street Cross Black Friday 100, Bosque Bigfoot Trail Runs and Colorado River Run.
Narrow your search to Texas, California and Arizona, or browse the other locations below.
341 listed events · 310 with upcoming dates
Upcoming ultramarathons
310 matching events, earliest date first. Entry availability is shown separately.
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.
· 50K
Race details, entry and past editions →Entry information ↗Bosque Bigfoot Trail Runs
USAAlbuquerque, New Mexico
Trail races through Albuquerque’s riverside bosque, using singletrack and jeep roads among the cottonwoods.
· 50K
Race details, entry and past editions →Entry information ↗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.
· 50K
Race details, entry and past editions →Entry information ↗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.
· 50K
Race details, entry and past editions →Entry information ↗The Derby 50K
USAEllerbe, North Carolina
A low-key looped ultra on rolling rural asphalt and dirt roads around the Derby community.
· 50K
Race details, entry and past editions →Entry information ↗Turkey Burn Ultra
USAClermont, Florida
Thanksgiving weekend trail races through Lake Louisa State Park’s sand hills, forest and lakeside terrain.
· 50K
Race details, entry and past editions →Entry information ↗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.
· 100K
Race details, entry and past editions →Entry information ↗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.
· 50K
Race details, entry and past editions →Entry information ↗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.
· 50K
Race details, entry and past editions →Entry information ↗Devil Dog Ultras
USATriangle, Virginia
Looped ultras through Prince William Forest Park, combining wooded singletrack, rolling hills and short fire-road sections.
· 100K / 50K · Entry closed
Race details, entry and past editions →HAROC Hanging Rock Challenge
USADanbury, North Carolina
Technical trail races among Hanging Rock State Park’s cliffs, waterfalls and rocky woodland paths.
· 50K
Race details, entry and past editions →Entry information ↗Isle du Bois Trail Run
USAPilot Point, Texas
Loop races on singletrack beside Lake Ray Roberts, mixing runnable stretches with rocks and roots.
· 50K
Race details, entry and past editions →Entry information ↗Jackson County Ultras
USABrownstown, Indiana
Rugged trail races in Jackson-Washington State Forest with a start and finish at PYOCA Camp and Retreat Center.
· 100K / 50K
Race details, entry and past editions →Entry information ↗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.
· 50K
Race details, entry and past editions →Entry information ↗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.
· 100K / 50K
Race details, entry and past editions →Entry information ↗McDowell Mountain Frenzy
USAFountain Hills, Arizona
Desert trail races through McDowell Mountain Regional Park, starting from the Competitive Track area.
· 50K
Race details, entry and past editions →Entry information ↗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.
· 50K
Race details, entry and past editions →Entry information ↗OTHTC High Desert Ultra
USARidgecrest, California
Desert trail races on rolling dirt roads above Ridgecrest, starting and finishing at Cerro Coso Community College.
· 50K
Race details, entry and past editions →Entry information ↗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.
· 50K
Race details, entry and past editions →Entry information ↗Sawmill Trail Runs
USAPine, Colorado
Winter trail races through Staunton State Park’s meadows, forests and granite outcrops near Pine.
· 50K
Race details, entry and past editions →Entry information ↗The Guv’nor Frozen 50
USADodgeville, Wisconsin
Winter trail races through Governor Dodge State Park, with three distances on wooded and open park trails.
· 50K
Race details, entry and past editions →Entry information ↗Hunter S. Thompson Fear and Loathing
USASan Francisco, California
Self-navigated urban ultras from Twin Peaks through San Francisco, with free entry and optional trail sections on the longer route.
· 50K · Entry closed
Race details, entry and past editions →PPTC Endurance Fest
USABrooklyn, New York
Looped road ultras in Prospect Park, with a shared start and finish near the Lincoln Road entrance.
· 50K
Race details, entry and past editions →Entry information ↗Salem 50K
USASalem, Oregon
Looped races at Bush’s Pasture Park on a course combining paved paths with gravel and dirt.
· 50K
Race details, entry and past editions →Entry information ↗Tidewater Striders Dismal Swamp
USAChesapeake, Virginia
Races on the paved Dismal Swamp Canal Trail, using closed-road out-and-back courses.
· 50K
Race details, entry and past editions →Entry information ↗Beast of the East 100
USAKings Mountain, North Carolina
Mountain trail races through Crowders Mountain State Park, starting and finishing at Crowders Ridge.
· 100K
Race details, entry and past editions →Entry information ↗Bell Ringer Trail Run
USABurns, Tennessee
Woodland trail races in Montgomery Bell State Park with three distances from the hotel parking area.
· 50K
Race details, entry and past editions →Entry information ↗Daytona 100
USAJacksonville Beach, Florida
Point-to-point road ultras along Florida’s Atlantic coast, finishing at the Ponce Inlet Lighthouse.
· 50K
Race details, entry and past editions →Entry information ↗Doomsday
USACool, California
Trail races from the Cool Staging Area, with a 50K ultra and half marathon through the surrounding foothills.
· 50K
Race details, entry and past editions →Entry information ↗Magnus Gluteus Maximus
USAClifton, Virginia
A low-key trail 50K on the Bull Run–Occoquan Trail from Hemlock Overlook Regional Park.
· 50K · Entry closed
Race details, entry and past editions →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 (31) →