Upcoming Trail Running 50Ks

Endurance Grid lists one hundred forty-six trail running 50Ks across the US, from September 2026 to November 2027 across 32 states.

146
Races
32
States

What a 50K is

A 50K is a running race where athletes run 31.1 miles long (50 kilometers) for time.

Trail running 50Ks are busiest in October and November, with the most in Texas, California, Ohio, and Colorado.

Frequently Asked Questions

How many 50K trail running races are there in the US?
Endurance Grid's Race Calendar lists 146 upcoming 50K trail running races across 32 states.
How far is a 50K trail running?
A 50K is a running race where athletes run 31.1 miles long (50 kilometers) for time.
Which states have the most 50K trail running races?
The states with the most 50K trail running races on Endurance Grid's Race Calendar are Texas, California, Ohio, Colorado, Pennsylvania, and New Jersey.