Explore by location
100K events around the world
Build your racing calendar, close to home or further afield. Compare 122 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 Devil Dog Ultras, Jackson County Ultras and Last Chance Ultra.
Start with a continent, including North America, Europe and Oceania, or browse the other locations below.
Compare running races by distance, date and surface, from shorter road events to trail races and ultras.
155 listed events · 122 with upcoming dates · 1 upcoming featured races
Upcoming 100k events
122 matching events, earliest date first. Entry availability is shown separately.
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.
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.
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.
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.
Naughty Hog
USAValley View, Texas
Looped trail races at Lake Ray Roberts’ Johnson Branch, with shorter out-and-back routes and a paved 5K.
Date listed · latest organiser confirmation not yet checked.
Across the Years
USAPeoria, Arizona
Fixed-time and fixed-distance running races on a loop at Peoria Sports Complex.
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.
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.
H9 Fierce Dragon
USABlairsville, Georgia
Mountain ultras and shorter trail races based at Vogel State Park.
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.
Route 68 Ultra
MASGombak, Selangor
Route 68 Ultra: road running in Gombak, Malaysia.
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.
Whitewalker Ultra
USAPalmyra, Wisconsin
Winter trail ultrarunning on the Ice Age Trail from Emma Carlin Trailhead.
Date listed · latest organiser confirmation not yet checked.
Big Bend Ultra
USATerlingua, Texas
Desert trail races through Big Bend Ranch State Park.
Date listed · latest organiser confirmation not yet checked.
Pierewaai ULTRA Trail 70km en 100km
NEDHoek van Holland, Netherlands
Pierewaai ULTRA Trail 70km en 100km in Hoek van Holland, with every timed public running distance supported by its organiser or authorised registration…
Date listed · latest organiser confirmation not yet checked.
Cowboy Yeti
USABastrop, Texas
Trail races through Bastrop State Park.
Date listed · latest organiser confirmation not yet checked.
North Texas Ultra
USAJacksboro, Texas
Trail ultras and shorter races on the fine-gravel Lost Creek Reservoir State Trailway.
Date listed · latest organiser confirmation not yet checked.
Black Canyon Ultras — 100K
USASpring Valley, Arizona
Historical results collected from the UTMB Index.
· Status TBC
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.
Red Dirt Ultra
USAProvencal, Louisiana
Trail ultras through the Sandstone and Caroline Dormon trail systems.
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.
Will Rogers Ultra
USAPacific Palisades, California
Timed and fixed-distance trail races on a loop at Will Rogers State Historic Park.
Date listed · latest organiser confirmation not yet checked.
Crazy Desert Trail Race
USASan Angelo, Texas
A weekend of desert trail races at San Angelo State Park.
Date listed · latest organiser confirmation not yet checked.
Sycamore Canyon Ultras
USAPoway, California
Looped trail ultras and a half marathon at Sycamore Canyon Preserve.
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.
Blackbeard’s Revenge 100 Ultra
USACorolla, North Carolina
Outer Banks ultra races with separate 100-mile and 100-kilometre starts.
· Status TBC
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 (33) →