Marathon calendar United States 2025-2026

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Explore the best marathons in the United States for 2025-2026! Our updated list features 660 exciting races across the country. Find your next race in the United States below and join the running community at these great events!

May 2025
May
3
Saturday

Dingneng Wang

Trail Run 26 mi
May
3
Saturday

Hacienda Hills Trail Run - Spring

Trail Run 5 km 10 km ... 26 mi 50 km
May
3
Saturday

Happy Trails Marathon

Trail Run 13 mi 26 mi
May
3-4
Sa - Su

Xterra New Jersey

Trail Run Triathlon 5 km 10 km 21 km 42 km
May
3-4
Sa - Su

Kalamazoo Marathon

5 km 10 km 13 mi 26 mi
May
3-4
Sa - Su

The Hoag OC Marathon

5 km 13 mi 26 mi
May
3-4
Sa - Su

Maine Coast Marathon

5 km 13 mi 26 mi
May
3-4
Sa - Su

Tacoma City Marathon

5 km 10 km 13 mi 26 mi
May
3
Saturday

Potomac River Run Marathon

13 mi 26 mi
May
3
Saturday

The Bluffs Trail Runs

Trail Run 5 km 10 km ... 13 mi 26 mi
May
3
Saturday

Muddy River Marathon

13 mi 26 mi
May
3
Saturday

Great Allegheny Ohiopyle Marathon

5 km 10 km 13 mi 26 mi
May
3
Saturday

La Crosse Marathon

5 km 13 mi 26 mi
May
3
Saturday

Wisconsin Marathon

5 km 13 mi 26 mi
May
3
Saturday

Farm Park Challenge

Trail Run 5 mi 25 km 26 mi
May
3-4
Sa - Su

Sunshine Double

5 km 10 km ... 26 mi 50 km
May
3
Saturday

Boise River Marathon

5 km 10 km 13 mi 26 mi
May
3
Saturday

Falcon 50 - Colorado Springs

Trail Run 13 mi 26 mi 50 mi
May
4
Sunday

Breakneck Point Trail Runs

Trail Run 21 km 42 km
May
4
Sunday

Avenue of the Giants Marathon

10 km 13 mi 26 mi
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