10K races in United States — 2026 trail running calendar

Oct

04

Norfolk Land Trust Trail Race Series/Haystack Mountain Challenge

Norfolk, Connecticut, United States

$25.00 - $35.00

Trail running

5K 10K Half-Marathon

Oct

04

SANDIA MOUNTAIN SHADOWS TRAIL RUN

Albuquerque, New Mexico, United States

$20.00 - $40.00

Trail running

10K 5K

Oct

04

Trailfest | Fleet Feet Springfield

Highlandville, Missouri, United States

$45.00 - $65.00

Trail running

5K 10K Half-Marathon

Oct

04

Pocahontas Trail Festival

Chesterfield, Virginia, United States

$55.00 - $65.00

Trail running

Half-Marathon 10K

Oct

10

The Mammoth 2026 - 100K / 50K / 25K / 10K / 5K and Mighty Mammoth 1K Fun Run

Glen Rose, Texas, United States

Free - $175.00

Trail running Running

Ultra 25K 10K 5K +3

Oct

10

Into the Woods Six Miler

Erie, Pennsylvania, United States

$35.00

Trail running

9.7K

Oct

10

Angry Cow Trail Run # 3

Lincoln, Nebraska, United States

$25.00 - $45.00

Trail running

4.8K 9.7K 19.3K

Oct

10

Sandhill Crane All Trail Half Marathon/10K/5K

Vandalia, Michigan, United States

Free - $25.00

Trail running Running

Half-Marathon 10K 5K 1K

Oct

10

Rock It in Chino Hills 5K & 10K

Brea, California, United States

$60.00 - $70.00

Trail running

5K 10K

Oct

10

Trailway Trail Race

Somerville, Texas, United States

$12.00 - $120.00

Trail running

Ultra Marathon Half-Marathon 10K +4

Oct

10

Soulstice Mountain Trail Run

Parks, Arizona, United States

$10.00 - $80.00

Trail running

30K 18K 9.7K 17.7K +2

Oct

10

Queen City Trail Run

Weslaco, Texas, United States

$10.00 - $60.00

Trail running Running

16.1K 10K 5K 1.6K +1