100mi events in the United States
Find 100mi events in the United States. Compare 91 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 The Hitchcock Experience, Beast of the East 100 and Daytona 100.
Narrow your search to California, Florida 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.
103 listed events · 91 with upcoming dates
Upcoming 100mi events
91 matching events, earliest date first. Entry availability is shown separately.
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.
Daytona 100
USAJacksonville Beach, Florida
Point-to-point road ultras along Florida’s Atlantic coast, finishing at the Ponce Inlet Lighthouse.
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.
Go Big
USAVolcano, Hawaii
Long-distance road races across Hawaii’s Big Island, starting in Volcano.
Date listed · latest organiser confirmation not yet checked.
New Year’s One Day
USASan Jose, California
Fixed-distance and timed races on an asphalt loop at Hellyer County Park.
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.
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.
H9 Fierce Dragon
USABlairsville, Georgia
Mountain ultras and shorter trail races based at Vogel State Park.
Date listed · latest organiser confirmation not yet checked.
Southern Tour Ultra
USAWilmington, North Carolina
Looped trail ultras and a relay in the Wilmington area.
Date listed · latest organiser confirmation not yet checked.
Coldwater Hundred
USAGoodyear, Arizona
Desert trail races through the foothills of the Sierra Estrella mountains.
Date listed · latest organiser confirmation not yet checked.
Long Haul 100
USALakeland, Florida
A hundred-mile trail ultra and a shorter race at Colt Creek State Park.
· Entry closed
Date listed · latest organiser confirmation not yet checked.
The Shippey
USAHigh Ridge, Missouri
A weekend of winter trail races at Beaumont Scout Reservation.
Date listed · latest organiser confirmation not yet checked.
Forgotten Florida
USAChristmas, Florida
Point-to-point ultras and shorter trail races through Florida’s forest preserves.
Date listed · latest organiser confirmation not yet checked.
The Bootleg Boogie
USABoulder City, Nevada
Looped trail ultras through Bootleg Canyon.
Date listed · latest organiser confirmation not yet checked.
Iron Heart Ultra
USASt. James, Missouri
Trail ultras and shorter races at Maramec Spring Park.
Date listed · latest organiser confirmation not yet checked.
Jackpot Ultras
USAHenderson, Nevada
Loop races around Cornerstone Park.
· Status TBC
Date listed · latest organiser confirmation not yet checked.
Grandmaster Ultras
USAMesquite area, Arizona
Desert trail ultras for runners aged 50 and over on the Arizona Strip near Mesquite.
Date listed · latest organiser confirmation not yet checked.
Lake Vian Hilltop Run
USAVian, Oklahoma
Looped races on paved paths and dirt trails overlooking Lake Vian.
Date listed · latest organiser confirmation not yet checked.
Mississippi Trail 50
USALaurel, Mississippi
Trail ultras and a shorter race on gently rolling forest paths in De Soto National Forest.
Date listed · latest organiser confirmation not yet checked.
Geaux Wild Ultra
USADoyline, Louisiana
Ultras on a five-mile trail loop at Lake Bistineau State Park.
Date listed · latest organiser confirmation not yet checked.
Swamp Fox Ultra
USAMcClellanville, South Carolina
Trail ultras and a half marathon through Francis Marion National Forest.
Date listed · latest organiser confirmation not yet checked.
The Pistol
USAAlcoa, Tennessee
Ultras and shorter races on the Alcoa greenway loop.
Date listed · latest organiser confirmation not yet checked.
Thunder Kiss
USASterrett, Alabama
Trail ultras and a twenty-mile race on the ridges of Double Oak Park.
Date listed · latest organiser confirmation not yet checked.
Viper 100
USACordova, Tennessee
Ultras on a mixed trail and paved loop through Shelby Farms Park.
Date listed · latest organiser confirmation not yet checked.
Grasslands Trail Run
USAAlvord, Texas
Trail races on the rolling woodland and grassland trails of the LBJ National Grasslands.
Date listed · latest organiser confirmation not yet checked.
Leatherwood Ultras
USAFerguson, North Carolina
Hilly trail ultras on private trails in the Leatherwood Mountains.
Date listed · latest organiser confirmation not yet checked.
Camp Croft Ultras
USASpartanburg, South Carolina
Loop trail ultras and a shorter race in Croft State 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.
View full race archive (12) →