Thumb Coast 5K
Thumb Coast 5K race day weather
Cool start — fast day potential, moderate wind
A cool 43°F at the start line is ideal for fast times — expect to warm up quickly once you're moving. Temperatures rising to 52°F through the course will gradually increase perceived effort in the second half. Moderate winds around 19mph may affect pacing on open sections of the course. High humidity (81%) will make it harder to cool down through sweat — increase fluid intake accordingly.
Pace Calculator
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Get your personalized Thumb Coast 5K race plan
A mile-by-mile breakdown of where your time goes, weather-adjusted splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide, all built around your goal and race-day conditions.
About the Thumb Coast 5K
The 5K is an out-and-back run along M-25 in historic downtown Port Austin, with views of Lake Huron. The course is fully paved and gains about 50 feet. It starts and finishes in downtown Port Austin on the Lake Huron Circle Tour, between State and Railroad streets, the same finish area as the marathon and half marathon.