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Great Lakes · Munising, MI · Great Lakes Endurance

Grand Island

50 Mile50KMarathonHalf-Marathon
31JULGrand Island
Date
Jul 31, 2027
First start
6:00 am
Distances
4 distances
Time limit
15 hours (9:00pm)
Elevation gain
3,041 feet

Run along the rugged, remote shoreline of Lake Superior at the Grand Island Trail Runs—an unforgettable race experience on a pristine island just offshore from Munising, Michigan. Offering 50 Mile, 50K, Marathon, and Half Marathon distances, each course showcases the island’s natural beauty: lush hardwood forests, sandstone cliffs, and sweeping Great Lakes views.

Runners will traverse a mix of singletrack, dirt roads, and sandy beach with highlights including Trout Bay, Echo Lake, towering Jacobsville sandstone cliffs, and the island’s scenic tombolo. Whether you're racing along the island's perimeter or climbing to its summit, this event offers stunning terrain and a true wilderness adventure.

Good to know

Start & finish

At the start line on the island

Good to know

Refunds: There are no refunds within 7 days of the event. Race credits may be provided to be used towards another Great Lakes Endurance event if we are more than 7 days out.

Packet pickup

Participant transfers: There are no bib transfers.

Good to know

Distance changes: You can change your race distances by emailing the race director, Zach Mayfield, at zach@aravaiparunning.com

Good to know

Nearest Airport: Marquette, MI (also know as KI Sawyer International) one hour drive time Host Hotel: Holiday Inn Express Lakeview, Munising, MI (overlooking Grand Island). Reservations recommended: 906.387.4800 Chamber of Commerce: 906.387.2138 Chamber of Commerce Website: www.algercounty.org The drive from Detroit metro to Munising is at least seven (7) hours.

Shuttles

Dogs are welcome on Grand Island. They are allowed on the shuttle bus, ferry boat and the start/finish area, but not on the race course. Please pick up animal waste.

Pick your distance

The numbers for each course, straight from the race page. Compare them side by side below.

Date
Saturday July 31, 2027
Start Time
6:00 am
Time Limit
15 hours (9:00pm)
Distance
51.9 Miles
Total Elevation Gain
3,041 feet
Max Elevation
941 feet

Compare the distances

50 Mile50kMarathonHalf Marathon
DateSaturday July 31, 2027–––
Start Time6:00 am6:30 am7:00 am (Early Start Option: 6:00 am)–
Time Limit15 hours (9:00pm)10 hours (4:30pm)6 Hours (2pm)–
Distance51.9 Miles31.8 Miles27 Miles13.3 Miles
Total Elevation Gain3,041 feet1,891 feet1,505 feet415 feet
Max Elevation941 feet938 feet823 feet–

Course & location

Grand Island, Munising, MI

Directions
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Grand IslandJul 31 · Grand Island, Munising, MI

Past editions

1 editions since 2026, 392 finishers.

  1. 3922026
All results
See you on the start line

Jul 31, 2027