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 Sangre de Cristo Trail Festival and Chiltern Hills 100K 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.
Sangre de Cristo Trail Festival
USAWestcliffe, Colorado
A mountain trail festival near Westcliffe with ultras on Saturday and shorter races on Sunday.
· Status TBC
Date listed · latest organiser confirmation not yet checked.
Chiltern Hills 100K Ultra
ENGChesham, Buckinghamshire
Chiltern Hills 100K Ultra in Chesham.
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) →