Mackinac Island Great Turtle Half Marathon & 5.7 Mile

Lace up for an unforgettable journey at the Mackinac Island Great Turtle Half Marathon & 5.7 Mile on October 24, 2026, in picturesque Mackinac Island, MI. Celebrating its 30th anniversary, this iconic event draws over 2,000 runners and walkers to experience one of Michigan's most scenic races.

Choose your challenge: a demanding Half Marathon (13.1M/13.2M) or a spirited 5.7 Mile race, both starting and finishing near the historic Mission Point Resort. The courses wind through the car-free island's stunning landscape, taking you along shoreline paths with breathtaking views of Lake Huron and the famed Arch Rock, before veering into the island's interior. Expect a challenging mix of terrain, including forested trails, historic sites, paved roads, and some gravel bike paths, complete with significant elevation changes that offer rewarding vistas. Runners consistently praise the race for its impeccable organization and friendly volunteers.

Typical race day conditions in late October include highs around 51°F and lows around 34°F, with a 19% chance of precipitation, making for invigorating fall running. Participants receive a commemorative garment and a unique Great Turtle finisher medal, with post-race refreshments awaiting at the finish line. As part of Mackinac Island's Halloween Weekend, the race offers a festive atmosphere, complete with island-wide sales and Halloween activities for all ages, creating a truly unique race experience during the island's last open tourist weekend.