In 12 days · Sat, Oct 24, 2026
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Saturday, October 24th, 2026
One Lakeshore Drive, Mackinac Island MI
Half
43–49°F · some rain risk
See last 10 years
On this date: rain 3 of the last 10 years
2025
41–45°F
dry
2024
42–50°F
dry
2023
46–58°F
rain
2022
51–58°F
rain
2021
42–47°F
dry
2020
35–39°F
dry
2019
42–45°F
dry
2018
38–42°F
dry
2017
44–54°F
rain
2016
45–47°F
dry
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Race-day forecast · Saturday, Oct 24
Foggy · 49–55°F
Saturday, Oct 24starts near 49°F · 14% chance of rain · wind up to 8 mph
About this race
Join us for the 2026 Great Turtle Half Marathon and 5.7 Mile - one of the most scenic trail events in the country! Enjoy the beauty of Mackinac Island's Fall season running and walking the interior trails and shoreline during the last open weekend of the season. This is the 30th anniversary of this iconic Mackinac Island event!
All who register will enjoy a great garment in the Great Turtle tradition, a unique commemorative Turtle medal, goodies after the race and fun festivities! After the race, enjoy Halloween fun at Mission Point and Downtown Mackinac Island for adults and children, great end-of-season sales in the downtown shops, or just spend time enjoying the peace and serenity of the Island's interior!
Course map
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