10K races in United States — 2026 trail running calendar

Dec

13

Palmetto Bluff Buffalo Run 10K, 30K, 50K Ultra and Relay

Bluffton, South Carolina, United States

$45.00 - $250.00

Trail running Walking

10K 30K Ultra +2

Dec

26

Run Ohio Races Christmas 1.5 mile fun run 5k, 10k, 15k

Fairborn, Ohio, United States

$15.00 - $45.00

Running Trail running

2.5K 5K 10K 15K

Jan

01

Canyon of the Eagles 100: New Year’s Trail Challenge

Burnet, Texas, United States

$49.99 - $149.99

Running Trail running

Ultra 25K Half-Marathon 10K +4

Jan

09

River Ranch Resolution Run

Liberty Hill, Texas, United States

$10.00 - $120.00

Trail running

49.9K Marathon Half-Marathon 10K +2

Jan

09

NJ Trail Series SOMO Winter 3

South Orange, New Jersey, United States

$40.00 - $50.00

Trail running

5K 10K Half-Marathon

Jan

16

Shannon Trail Series

San Angelo, Texas, United States

$30.00

Trail running

5K 10K 12K 15K +2

Jan

17

Big Bend Ultra

Terlingua, Texas, United States

$110.00 - $210.00

Trail running

9.8K 20.1K 30.6K Ultra +1

Jan

23

Scrub Jay Races

Osprey, Florida, United States

$37.00 - $52.00

Running Trail running

5K 10K

Jan

23

Great Springs Trail Race - San Marcos

San Marcos, Texas, United States

$10.00 - $112.00

Trail running

Marathon Half-Marathon 10K 1.6K

Jan

23

MileBuilt Gemini Springs 2-Day Challenge

DeBary, Florida, United States

$35.00 - $85.00

Trail running Running

Ultra Marathon Half-Marathon 10K +6

Jan

23

Empire Ranch Trail Run

Sonoita, Arizona, United States

Free - $45.00

Trail running Running

10K 5K 1.6K +1

Jan

23

Fox Valley Winter Challenge Trail Series 5k/8k/10k

Batavia, Illinois, United States

$40.00 - $115.00

Trail running

5K 8K 10K +3