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 Cactus Rose Endurance Trail Race, Hare Mountain Trail Runs and Lake Murray Endurance Run.
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.
Cactus Rose Endurance Trail Race
USABandera, Texas
Technical trail races in the Texas Hill Country, with long ultras, shorter courses and a youth mile.
Date listed · latest organiser confirmation not yet checked.
Hare Mountain Trail Runs
USAHagarville, Arkansas
Rugged races on the Ozark Highlands Trail, from a short mountain ascent to a 100-mile point-to-point course.
Date listed · latest organiser confirmation not yet checked.
Lake Murray Endurance Run
USAArdmore, Oklahoma
Trail races of several lengths through Lake Murray State Park. Confirm the precise start location in the final briefing: current organiser text…
Date listed · latest organiser confirmation not yet checked.
Rim to River 100
USANew River Gorge, West Virginia
A 100-mile out-and-back race through New River Gorge, starting and finishing at ACE Adventure Resort.
· Entry closed
Date listed · latest organiser confirmation not yet checked.
Machete Muertos Trail Races
USAPerris, California
Mountain trail races around Lake Perris for the DÃa de los Muertos weekend. The 200-mile race starts on Wednesday, with the shorter races starting on…
Date listed · latest organiser confirmation not yet checked.
Hell Creek 100
USASylvan Grove, Kansas
Trail races on the Switchgrass trails beside Wilson Lake, including the Pure Hell 140 and shorter solo options. A separate team relay is also offered.
Date listed · latest organiser confirmation not yet checked.
Mamba 100
USAMemphis, Tennessee
Ultramarathons and a shorter trail race on the Wolf River trails. Different lead-in sections join a flat woodland loop; each distance has its own start.
Date listed · latest organiser confirmation not yet checked.
Mountaineer Rumble
USABlacksburg, South Carolina
Trail races on repeated loops of the CCC Multi-Use Trail at Kings Mountain State Park, with distance-specific lead-in sections for the metric ultras.
Date listed · latest organiser confirmation not yet checked.
Pinhoti 100
USAHeflin, Alabama
A point-to-point trail ultramarathon through Talladega National Forest, starting near Heflin and finishing at the Sylaward trailhead at Lake Howard.
· Entry closed
Date listed · latest organiser confirmation not yet checked.
Ponderosa Polar Challenge
USAOrderville, Utah
Trail distances and timed challenges on interchangeable loops at Zion Ponderosa Ranch Resort, near Zion National Park.
Date listed · latest organiser confirmation not yet checked.
Rio Del Lago Endurance Runs
USAGranite Bay, California
Trail ultras starting at Beals Point, following the lakes and foothills between Folsom and Auburn.
Date listed · latest organiser confirmation not yet checked.
Screaming Monkey
USAKeithville, Louisiana
Technical woodland races on the Monkey Trails surrounding a chimpanzee sanctuary, with shorter races and overnight ultras.
Date listed · latest organiser confirmation not yet checked.
tBunk Endurance Challenge
USALaGrange, Wisconsin
Multiple fixed-distance ultras on the Nordic Trail system in the Southern Kettle Moraine State Forest.
Date listed · latest organiser confirmation not yet checked.
Dinosaur Valley Endurance Run
USAGlen Rose, Texas
Trail races over the rocks, roots and rolling hills of Dinosaur Valley State Park, with morning and evening short-course options.
Date listed · latest organiser confirmation not yet checked.
Fall Creek 100
USASpencer, Tennessee
Trail ultras through Fall Creek Falls State Park, passing waterfalls, suspension bridges, forest paths and the lake shoreline.
Date listed · latest organiser confirmation not yet checked.
Fire Fest Ultra
USALogandale, Nevada
Desert trail races through the sandstone scenery of the Logandale Trail System near Valley of Fire, with Saturday and Sunday programmes.
Date listed · latest organiser confirmation not yet checked.
The Stuffed Turkey Endurance Races
USAGranger, Iowa
Looped trail races at Jester Park with rolling hills, flat stretches and an equestrian-centre base.
Date listed · latest organiser confirmation not yet checked.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Angeles Crest 100 Mile Endurance Run
USAAltadena
Angeles Crest 100 Mile Endurance Run — historical running results.
Next date not listed
Race guide and recorded editions →HURT 100
USAHonolulu
HURT 100 — historical running results.
Next date not listed
Race guide and recorded editions →Infinitus
USARipton
Infinitus — historical running results.
Next date not listed
Race guide and recorded editions →Leadville Trail 100 Run
USALeadville
Leadville Trail 100 Run — historical running results.
Next date not listed
Race guide and recorded editions →Mines of Spain 100
USADubuque, Iowa
One-hundred-mile and one-hundred-kilometre races on the trails of the Mines of Spain Recreation Area.
Next date not listed
Race guide and recorded editions →Plain Endurance Runs
USALeavenworth
Plain Endurance Runs — historical running results.
Next date not listed
Race guide and recorded editions →Browse states, counties and areas
Choosing a race in United States
The unfiltered upcoming calendar includes events in Bethera (2), Pelham (2), Alvord (1). Use the town filter to compare locations, then check the race guide for the start venue and organiser’s travel information.
Questions about 100mi events in United States
What should I check before a running event in United States?
Choose your distance, then check the route, elevation, cut-off time and entry conditions in the organiser’s race guide.
Which trail 100mi events are coming up in the United States?
Cactus Rose Endurance Trail Race is listed for 23 October 2026. Hare Mountain Trail Runs is listed for 23 October 2026. Lake Murray Endurance Run is listed for 24 October 2026. Check the race guide and organiser’s latest information before making plans.
Where can I find race entry details for the United States?
Follow the link from the race guide to the organiser or entry provider, where one is available. Check the entry deadline, eligibility and current availability there. A listed race date does not necessarily mean entries are still open.
Why has a race moved out of the upcoming calendar?
Once its listed dates have passed, a race moves to the past-editions view unless another upcoming edition is recorded. Cancelled events also leave the upcoming list. The race guide stays available, and the event returns when a new date is added.