Explore by location
Road 100mi events around the world
Build your racing calendar, close to home or further afield. Compare 10 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 Day of the Dead Running Series, Route 66 UltraRun and Fat Ox Endurance Runs.
Compare running races by distance, date and surface, from shorter road events to trail races and ultras.
11 listed events · 10 with upcoming dates
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Upcoming 100mi events
10 matching events, earliest date first. Entry availability is shown separately.
Day of the Dead Running Series
USALas Cruces, New Mexico
Two days of running beside the Rio Grande, with distances from 5K to ultra and optional early starts for longer races.
Date listed · latest organiser confirmation not yet checked.
Route 66 UltraRun
USASeligman, Arizona
Point-to-point road ultras on Historic Route 66, finishing at Topock66. The 140-mile race starts in Seligman; the centennial 100-mile race starts in…
· Entry closed
Date listed · latest organiser confirmation not yet checked.
Fat Ox Endurance Runs
USAGoodyear, Arizona
Timed endurance races and fixed-distance ultras on a short concrete loop around Estrella Mountain Regional Park’s turf picnic area.
Date listed · latest organiser confirmation not yet checked.
Chattabrewchee Invitational
USAColumbus, Georgia
A small field 100-mile race on a one-mile sidewalk and road loop in Columbus, with limited organiser support.
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.
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.
Jackpot Ultras
USAHenderson, Nevada
Loop races around Cornerstone Park.
· Status TBC
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.
Loopy Looper
USAPennsauken, New Jersey
Timed races and a 100-miler around Cooper River Park, with a shorter night loop.
· 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.
Hainesport Endurance Run
USAHainesport, New Jersey
Fixed-time races and a 100-mile race on a flat paved loop at Hainesport Township Municipal Park.
Next date not listed
Race guide and recorded editions →Choosing a race away from home
The unfiltered upcoming calendar includes events in Alcoa (1), Columbus (1), Goodyear (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 worldwide
What should I check before a running event in World?
Choose your distance, then check the route, elevation, cut-off time and entry conditions in the organiser’s race guide.
Which road 100mi events are coming up in the world?
Day of the Dead Running Series is listed for 24 October 2026. Route 66 UltraRun is listed for 14 November 2026 (entry closed). Fat Ox Endurance Runs is listed for 20 November 2026. Check the race guide and organiser’s latest information before making plans.
Where can I find race entry details for the world?
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.