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.
One event to explore is Pine Creek Challenge.
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.
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 (12) →