Upcoming Trail Running 1Ks

Endurance Grid lists nineteen trail running 1Ks across the US, from November 2026 to October 2027 across 8 states.

19
Races
8
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 April and November, with the most in California, Texas, Arizona, and Montana.

Frequently Asked Questions

How many 1K trail running races are there in the US?
Endurance Grid's Race Calendar lists 19 upcoming 1K trail running races across 8 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 California, Texas, Arizona, Montana, New Mexico, and Arkansas.