Trail running Race Calendar in United States

May

17

Nassau Suffolk Trail Marathon & 15 Miler

Farmingdale, New York, United States

Trail running

Marathon 24.1K

May

17

Exeter Day School 5K Trail Race and Kids Fun Run

Exeter, New Hampshire, United States

Trail running

5K

May

16

Blue Heron 10k

Stearns, Kentucky, United States

Trail running

9.8K

May

16

Forgotten Forest 9 Hour Ultra

Stratford, Connecticut, United States

Trail running

Forgotten Forest 9 Hour

May

16

Hueston Woods Trail Race

College Corner, Ohio, United States

$40.00 - $100.00

Trail running

Half-Marathon 10K 5K 2026 Fall Pack Pass (Entry into ALL 2026 Events) Valid Until 12/31 +13

May

16

Drunken Pig Run

Seligman, Missouri, United States

Trail running Running

5K 1.6K

May

16

Tie Dye 50k

Yellow Springs, Ohio, United States

Trail running

Ultra

May

16

Marshall Mountain Revival Trail Runs

Missoula, Montana, United States

Trail running

25.7K 8K

May

16

Soaring Eagle Trail Run

Sammamish, Washington, United States

Trail running Running

5K Half-Marathon 10K 1K +2

May

16

Zen Squirrel Trail Run

Chapel Hill, North Carolina, United States

Trail running

3.2K 8K 16.1K

May

16

Conestoga Crusher 5K & 10k Trail Race & Kids Trail Race

Holtwood, Pennsylvania, United States

Trail running

10K 5K 2.4K

May

16

Oil Creek 5 & 13 Stacked Trail Races

Titusville, Pennsylvania, United States

Trail running

8K Half-Marathon 29K 3.2K