There are 27 marathons in Michigan scheduled for 2026. The next is the Run the Pier Running Festival in Manistee on July 25. Michigan marathons run primarily July through June.

Tri Millennium

Fri, Jul 24 · Walker, MI Walker
Kids Tri (Ages 6-8)Kids Tri (Ages 12-15)Sprint Aquabike +10

Crystal Lake Team Marathon

Sat, Aug 8 · Beulah, MI Beulah
Crystal Lake Team Marathon (Family Team)Crystal Lake Solo Marathon (One person 26.2 Miles)Crystal Lake Team Marathon (Open Teams) +1

Millennium Meadows Marathon

Sun, Aug 30 · Grand Rapids, MI Grand Rapids
10K (Uses one extended loop of the course)Half Marathon (13.35 miles with certified half marathon split)Marathon +1

Driathlon

Sun, Sep 20 · Bay City, MI Bay City
Individual Kayak (Provided)2 Person Team - 2 People Canoe, Bike and Run2 Person Relay - 2 people canoe/1 person Bike/1 person Run +1

White Pine Thaw Marathon Relay

Sun, Mar 7 · Comstock Park, MI Comstock Park
NO SHIRT & NO MEDAL: White Pine Thaw Marathon RelayWhite Pine Thaw Marathon RelayWhite Pine Thaw Solo Full Marathon +3

Amway River Bank Run

Wed, May 5 · Grand Rapids, MI Grand Rapids
RBR 5K Virtual Walk Anywhere5K Community Walk - GentexRBR 5K Virtual Run Anywhere +31

Cogs and Kegs

Mon, Jun 14 · Birmingham, MI Birmingham
Cogs and Kegs 10-Mile RideCogs and Kegs 10-Mile RideCogs and Kegs 30-Mile Ride +3