5K races in United States — 2026 trail running calendar

Sep

03

DeBary 50K, Marathon, Half, 10K & 5K – MileBuilt Gemini Springs Labor Day 4-Day Challenge

DeBary, Florida, United States

$35.00 - $85.00

Trail running Running

Ultra Marathon Half-Marathon 10K +16

Sep

04

Leave No Trace

Peninsula, Ohio, United States

$30.00 - $70.00

Trail running

Half-Marathon 15K 5K

Sep

18

Tröegs Rugged Trail 5K Run for Conservation

Millersburg, Pennsylvania, United States

$45.00

Trail running

5K

Sep

18

Dirty Spokes Road Atlanta Trail Run

Braselton, Georgia, United States

$40.00 - $45.00

Trail running

9.7K 5.1K

Sep

25

Vet Fest

Middletown, Delaware, United States

$30.00

Running Walking Trail running Cycling

5K 1.6K Vet Fest - Motorcycle Ride +1

Sep

26

Timberline Trail Run

Bozeman, Montana, United States

$5.00 - $50.00

Trail running

20K 10K 5K 1K

Oct

02

Bear Lake Ultra

Lapeer, Michigan, United States

$96.00

Trail running

5K

Oct

09

Le Grizz Ultramarathon & Relay

Polebridge, Montana, United States

$35.00 - $120.00

Trail running Running

Ultra 15K 5K

Oct

14

Little Rooster Run

Glencoe, Kentucky, United States

$20.00 - $115.00

Running Trail running

Little Rooster Kids Fun Run 5K Ultra

Oct

16

Lake Hodges Trail Festival

San Diego, California, United States

$15.00 - $110.00

Trail running Running Duathlon

50K 25.1K 15K 10.3K +7

Oct

16

Heart of Cool Trail Run

Cool, California, United States

$30.00 - $55.00

Trail running

5K 10K Half-Marathon

Oct

31

The Next Loop Endurance Series - New England

Wrentham, Massachusetts, United States

$90.00

Trail running

5K