Grand Island Trail Marathon
Munising, United States • 25 Jul 2026
Grand Island Trail Runs
Grand Island Trail Runs take place on Grand Island in Lake Superior near Munising, MI. The courses follow the island perimeter counterclockwise, passing Murray Bay and Duck Lake, then heading east into the Tombolo and up into the island's thumb before returning along Trout Bay. Runners encounter shoreline sections and ascend eastern cliffs with views toward Pictured Rocks National Lakeshore.
The northern half of the island features roughly 300 foot colored Jacobsville sandstone cliffs and a remote North Beach. The western shore return offers extended views of Lake Superior. Much of the trail is shaded by hardwood forest, while exposed cliff sections are affected by cool breezes from the lake. Trail surfaces include single track, two track, and narrow dirt roads.
Event distances:
- 50K
- Marathon
- 1/2 Marathon
The event is associated with Great Lakes Endurance, which has operated regional trail events since 2000; as of the 2026 season the events will be operated by Aravaipa Running. Registration for this edition closes Mon, Jul 20 at 11:59PM ET. Visit the organization's website for the most recent information.