Marathon races in United States — 2026 running calendar

CDA Marathon

Coeur d'Alene, Idaho, United States

23 May, 2026 (Sat) – 24 May, 2026

Running

1.6K Marathon Half-Marathon 10K +3

Bayshore Marathon, Half Marathon, 10K, & Kids Fun Run

Traverse City, Michigan, United States

22 May, 2026 (Fri) – 23 May, 2026

Running

5K Marathon Half-Marathon 10K +1

Windermere Marathon

Spokane, Washington, United States

17 May, 2026 (Sun)

Running

Marathon Half-Marathon 10K 5K +3

EPIC Marathon and Running Festival with myTEAM TRIUMPH

Green Bay, Wisconsin, United States

17 May, 2026 (Sun)

Running

Marathon Half-Marathon 5K +2

Colfax Marathon

Lone Tree, Colorado, United States

17 May, 2026 (Sun)

Running

Marathon

EPIC Marathon and Running Festival

Green Bay, Wisconsin, United States

17 May, 2026 (Sun)

Running

Marathon Half-Marathon 5K 0.2K +2

Sugarloaf Marathon and 15K

Carrabassett Valley, Maine, United States

17 May, 2026 (Sun)

Running

Marathon 15K

Armed Services Marathon, Half Marathon & 5K

Grand Haven, Michigan, United States

17 May, 2026 (Sun)

Running

Marathon Half-Marathon 10K 5K

Girls on the Run Rockies Colfax SoleMates 2026

Denver, Colorado, United States

17 May, 2026 (Sun)

Running

Marathon Half-Marathon

YMCA Famous Idaho Potato Marathon & Fun Runs

Boise, Idaho, United States

16 May, 2026 (Sat)

Running

Marathon Half-Marathon 10K 5K

Guernsey County Crossroads Marathon & Half-marathon

Cambridge, Ohio, United States

16 May, 2026 (Sat)

Running

Marathon Half-Marathon 5K

Capital City Marathon

Olympia, Washington, United States

16 May, 2026 (Sat) – 17 May, 2026

Running

1.9K Marathon Half-Marathon 8K