Upcoming Trail Running 100 Milers

Endurance Grid lists twenty trail running 100 milers across the US, from November 2026 to October 2027 across 10 states.

20
Races
10
States

What a 100 Mile is

A 100-mile race is a running race where athletes run 100 miles long (160.9 kilometers) for time.

Trail running 100 milers are busiest in December and May, with the most in Texas, North Carolina, Ohio, and New Jersey.

Frequently Asked Questions

How many 100 Mile trail running races are there in the US?
Endurance Grid's Race Calendar lists 20 upcoming 100 Mile trail running races across 10 states.
How far is a 100 Mile trail running?
A 100-mile race is a running race where athletes run 100 miles long (160.9 kilometers) for time.
Which states have the most 100 Mile trail running races?
The states with the most 100 Mile trail running races on Endurance Grid's Race Calendar are Texas, North Carolina, Ohio, New Jersey, Pennsylvania, and South Carolina.