Explore by location
Trail 100mi events around the world
Build your racing calendar, close to home or further afield. Compare 90 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 Coyote Two Moon, Salt Flats Endurance Runs and Centurion Thames Path 100.
Start with a continent, including North America and Europe.
Compare running races by distance, date and surface, from shorter road events to trail races and ultras.
103 listed events · 90 with upcoming dates
Browse continents
Upcoming 100mi events
90 matching events, earliest date first. Entry availability is shown separately.
Coyote Two Moon
USAOjai, California
Mountain ultras through Los Padres National Forest above Ojai.
Date listed · latest organiser confirmation not yet checked.
Salt Flats Endurance Runs
USAWendover, Utah
Ultras across the Bonneville Salt Flats and surrounding hills, with a shorter fun run.
Date listed · latest organiser confirmation not yet checked.
Centurion Thames Path 100
ENGLondon, Greater London
Centurion Thames Path 100 — a verified UTMB Index race for the 2026 edition.
Date listed · latest organiser confirmation not yet checked.
Ultra X Scotland
SCOInverness, Highlands
Ultra X Scotland in Inverness.
Date listed · latest organiser confirmation not yet checked.
Cocodona
USABlack Canyon City, Arizona
Point-to-point ultras across the mountains and desert of central and northern Arizona.
Date listed · latest organiser confirmation not yet checked.
Born to Run Ultra Marathons
USALos Olivos, California
A trail-running festival on dirt ranch roads and singletrack near Los Olivos.
Date listed · latest organiser confirmation not yet checked.
Hell Hole Hundred
USABethera, South Carolina
Summer trail ultras and shorter races in Francis Marion National Forest.
Date listed · latest organiser confirmation not yet checked.
Eagle Up Ultra
USACanal Fulton, Ohio
Endurance races on a flat limestone towpath loop from St Helena Park.
Date listed · latest organiser confirmation not yet checked.
Weld Your Mettle Running Festival
USAEaton, Colorado
Loop running races and timed endurance challenges near Eaton.
Date listed · latest organiser confirmation not yet checked.
Centurion South Downs Way 100
ENGWinchester, Hampshire
Centurion South Downs Way 100 in Winchester.
Date listed · latest organiser confirmation not yet checked.
Froggy Mountain 100
USAGalax, Virginia
Mountain ultras on a steep one-mile private forest trail loop.
Date listed · latest organiser confirmation not yet checked.
Phoenix Centaur 100 Mile Ultra
ENGDorking, Surrey
Phoenix Centaur 100 Mile Ultra in Dorking.
Date listed · latest organiser confirmation not yet checked.
Moray Way 100 & Relay
SCOForres, Moray
Moray Way 100 & Relay — 100mi at The Moray Way.
Date listed · latest organiser confirmation not yet checked.
Western States Endurance Run
USAOlympic Valley, California
The world’s oldest 100-mile trail race, from Olympic Valley to Auburn.
· Status TBC
Date listed · latest organiser confirmation not yet checked.
Hardrock Hundred
USASilverton, Colorado
High-altitude 100-mile loop through the San Juan Mountains.
· Status TBC
Date listed · latest organiser confirmation not yet checked.
Siskiyou Out Back Trail Runs
USAAshland, Oregon
Mountain trail races around Ashland and the Siskiyou Crest.
Date listed · latest organiser confirmation not yet checked.
Devil's Gulch
USAWenatchee, Washington
Mountain trail ultras and a half marathon from Mission Ridge.
Date listed · latest organiser confirmation not yet checked.
Vero Beach Octopus Ultra
USAVero Beach, Florida
Ultras through the exposed and shaded trails around Vero Beach.
Date listed · latest organiser confirmation not yet checked.
Rise in the Pines
USASmithville, Texas
Loop trail races through the pine woods of Rocky Hill Ranch.
Date listed · latest organiser confirmation not yet checked.
Ultra X Wales
WALAbergavenny, Monmouthshire
Ultra X Wales in Abergavenny.
Date listed · latest organiser confirmation not yet checked.
Beacons Way Ultra 100 Mile
WALAbergavenny, Monmouthshire
Beacons Way Ultra 100 Mile in Abergavenny.
Date listed · latest organiser confirmation not yet checked.
Rollin’ 100
ENGClun, Shropshire
Rollin’ 100 in Clun.
Date listed · latest organiser confirmation not yet checked.
Standhope Ultra Challenge
USAKetchum, Idaho
Remote high-altitude trail races in Idaho’s Pioneer Mountains.
Date listed · latest organiser confirmation not yet checked.
Badger Trail Races by Ten Junk Miles Racing
USABelleville, Wisconsin
Rail-trail races on the Badger State and Jane Addams trails.
Date listed · latest organiser confirmation not yet checked.
Burning River Endurance Run
USACuyahoga Falls, Ohio
Ultras and a marathon through the Cuyahoga Valley and Summit Metro Parks.
· Status TBC
Date listed · latest organiser confirmation not yet checked.
Shawnee Hills Trail Races
USAOzark, Illinois
Technical trail ultras through the sandstone hills and forests around Camp Ondessonk.
Date listed · latest organiser confirmation not yet checked.
Ultra Tour Lancashire
ENGDunsop Bridge, Lancashire
Ultra Tour Lancashire in Dunsop Bridge.
Date listed · latest organiser confirmation not yet checked.
Wildcat Ultras
USAPensacola, Florida
Ultras on a flat grass and dirt loop at the Escambia County Equestrian Center.
· Status TBC
Date listed · latest organiser confirmation not yet checked.
Mogollon Monster
USAPine, Arizona
Mountain trail races around the Mogollon Rim.
· Status TBC
Date listed · latest organiser confirmation not yet checked.
Pine Creek Challenge
USAWellsboro, Pennsylvania
Out-and-back endurance races on the Pine Creek Rail Trail.
· 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 (13) →