Grand Island Trail Marathon
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Grand Island Trail Runs - Grand Island, MI
Grand Island Trail Runs takes place on Grand Island in Lake Superior near Munising, MI. The course follows the island perimeter counterclockwise, passing Murray Bay and Duck Lake before, at about three miles, heading east into the Tombolo and up into the island thumb. The route continues along Trout Bay and then climbs the eastern cliffs with views toward Pictured Rocks National Lakeshore.
The northern half of the island includes 300 foot colored Jacobsville sandstone cliffs and a remote North Beach. The return trail on the western shore provides extended views of Lake Superior. Much of the course is shaded by hardwood forest, while exposed cliff-top sections are open to lake breezes. Trail surfaces include single track, two track, and narrow dirt roads.
Event distances offered:
- 50K
- Marathon
- 1/2 Marathon
Great Lakes Endurance has operated trail running events in the Great Lakes region since 2000; as of the 2026 season the events are operated by Aravaipa Running. The event date is Saturday, July 25, 2026. Registration closes on Mon, Jul 20, 2026. Visit the organization's website for the most recent information.
