Michigan · Half Marathon · 5.7 Miles
Mackinac Island Great Turtle Half Marathon & 5.7 Mile
Mackinac Island Great Turtle Half Marathon & 5.7 Mile is a half marathon and 5.7 Miles event held in Mackinac Island, Michigan. It was last held on October 24, 2026 and is usually run in October; the next date hasn't been announced yet. About 705 runners take part across all distances.
- Usually held
- October
- Location
- Mackinac Island, MI
- Field size
- ~705 runners
Race details
- Last held
- October 24, 2026
- Usually held in
- October
- Location
- Mackinac Island, Michigan
- Distances
- Half Marathon, 5.7 Miles
- Field size
- About 705 runners
- Registration
- runsignup.com
- Official website
- runmackinac.com
Registration, course & weather
- Registration status
- Registration status as last checked September 26, 2026: open
- Start time
- 10:45 AM EDT
- Course profile — Half Marathon
- Point-to-point course; Mostly road, some trail; Not USATF certified
- Course profile — 5.7 Mile
- Point-to-point course; Mostly road, some trail; Not USATF certified
- Typical race-day weather
- about 39°F at the start, 74% humidity, 2 mph wind (based on the 2025 race day, measured near the city center rather than the exact start line; Open-Meteo, checked September 26, 2026)
About the Mackinac Island Great Turtle Half Marathon & 5.7 Mile
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 rac…
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Guides from the RaceRove blog
- 8 min read How to Choose the Best Half Marathon for a PR, Racecation or 50-State Challenge The best half marathon depends on what you want from it. How to choose a course for a personal record, a race worth travelling for, or an efficient stop on a 50-state challenge.
- 7 min read How to Find a 5K, 10K, Half Marathon or Marathon Near You A practical way to find running races near you: pick a distance, decide how far you'll travel, read the listing properly and confirm the details before you register.
- 9 min read How to Run a Race in All 50 States How to plan a 50-state running challenge: set your own rules, group states into trips, build a calendar around the seasons, budget for it and keep track of every finish.
- Blog All guides Planning advice for finding, choosing and travelling to races.
Mackinac Island Great Turtle Half Marathon & 5.7 Mile: common questions
- When is the Mackinac Island Great Turtle Half Marathon & 5.7 Mile?
- The next date hasn't been announced in the listing yet. The race is usually held in October. Check the organiser's website for the official date.
- Where is the Mackinac Island Great Turtle Half Marathon & 5.7 Mile held?
- In Mackinac Island, Michigan.
- What distances does the Mackinac Island Great Turtle Half Marathon & 5.7 Mile offer?
- Half Marathon and 5.7 Miles.
- How many people run the Mackinac Island Great Turtle Half Marathon & 5.7 Mile?
- About 705 runners across all of its distances. That figure is an estimate of the field size, not an entry cap.
- How do I register for the Mackinac Island Great Turtle Half Marathon & 5.7 Mile?
- Registration is handled by the organiser at runsignup.com. Entry fees, caps and deadlines are set there.
- Is registration open for the Mackinac Island Great Turtle Half Marathon & 5.7 Mile?
- Registration status as last checked September 26, 2026: open. Listed fee for the longest distance, $65 (from runsignup.com, checked September 26, 2026).
- What time does the Mackinac Island Great Turtle Half Marathon & 5.7 Mile start?
- 10:45 AM EDT.
- What is race-day weather usually like at the Mackinac Island Great Turtle Half Marathon & 5.7 Mile?
- about 39°F at the start, 74% humidity, 2 mph wind (based on the 2025 race day, measured near the city center rather than the exact start line; Open-Meteo, checked September 26, 2026).
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