Upcoming Trail Running 1Ks

Endurance Grid lists twenty-three trail running 1Ks across the US, from September 2026 to August 2027 across 12 states.

23
Races
12
States

What a 1K is

A 1K is a running race where athletes run 0.6 miles long (1 kilometer) for time.

Trail running 1Ks are busiest in October and November, with the most in Texas, California, Arizona, and New Mexico.

Frequently Asked Questions

How many 1K trail running races are there in the US?
Endurance Grid's Race Calendar lists 23 upcoming 1K trail running races across 12 states.
How far is a 1K trail running?
A 1K is a running race where athletes run 0.6 miles long (1 kilometer) for time.
Which states have the most 1K trail running races?
The states with the most 1K trail running races on Endurance Grid's Race Calendar are Texas, California, Arizona, New Mexico, New York, and Michigan.