Great Turtle Trail Run

Event overview

The Great Turtle Trail Run takes place on Mackinac Island, Michigan, on Saturday, October 25, 2025. The event offers multiple race options: a Half Marathon (13.1 miles), a 5.7 mile run, and a 5.7 mile walk, plus virtual race options for both distances. All registrants receive a commemorative garment and a finish medal; the 2025 garment is described as a dark green quarter-zip tech shirt with lime green overstitch. An $8 park usage fee assessed by Mackinac Island State Park is included in registration. The race is held during the island’s last open weekend of the season and is part of the Mackinac Island Trio series for participants who complete three RunMackinac events.

Courses and logistics

Both courses start and finish in front of Mission Point Resort. The half marathon follows the shoreline at the start, then continues through the island interior on bike trails and roads (mostly paved with some gravel), and returns to the shoreline for the finish. The 5.7 mile course also winds through interior roads and trails before reaching the shoreline for the finish. Water stations are placed at about every 2.5 miles. Porta-johns are available at the half marathon start/finish area; additional restrooms are located at British Landing and Arch Rock on the half course. Gear may be left in the Sound Stage but is not monitored. Events are non-refundable; transfers and virtual race options are available. Awards include overall and masters winners and top three in age divisions; all finishers receive a commemorative medal. Visit the organization's website for the most recent information.