
Lexington, United States of America · Sunday 8 November 2026
The event is held along Michigan's Lake Huron shoreline, starting in downtown Caseville and proceeding eastward to a finish in the community of Port Austin. The route is point-to-point and fully paved, with the course designed to showcase the region's characteristic Thumb Coast.Runners travel mainly along the waterfront, including a loop through Point Crescent State Park before culminating on Main Street in Port Austin. With its flat profile and minimal elevation change, the race is positioned a
Adjusted Time
4:27:20
Time difference: +27.3 minutes compared to a flat, road, temperate course.
Thumb Coast Marathon is a full marathon held in Lexington, United States of America, scheduled for Sunday 8 November 2026. The course is run on trail surface with 81m of total elevation gain, reaching a maximum altitude of 187m above sea level. For registration and full race details, visit the official Thumb Coast Marathon website.
This is a very flat course with only 81m of total elevation gain across the full distance. The course ranges from 177m to 187m above sea level — a 10m elevation range that makes it one of the flatter races available. Runners targeting a personal best will appreciate the minimal climbing.
Based on historical weather data for November, the expected race day conditions are as follows. Cold conditions are expected, with temperatures between 5°C and 10°C. While cold weather reduces overheating risk, runners should dress in layers and be prepared for potential wind chill. There is a high chance of rain (67%). Runners should prepare for wet conditions, including appropriate footwear and clothing choices.
Thumb Coast Marathon is a trail race, meaning the course includes unpaved surfaces such as dirt, gravel, or forest paths. Trail surfaces are inherently slower than road courses due to uneven footing, technical sections, and often steeper gradients. Trail-specific shoes with good grip are recommended, and runners should expect a finish time 10-20% slower than their equivalent road marathon time.
Our difficulty rating for Thumb Coast Marathon is calculated using a model that combines elevation gain, temperature impact, and surface type. Use the difficulty calculator above to enter your target finish time and see exactly how many minutes this course would add or subtract compared to a perfectly flat, cool, road-based marathon. Faster runners and slower runners are affected differently by the same course conditions, so the difficulty is personalised to your pace.
Looking for an easier marathon or a tougher challenge? You can also compare Thumb Coast Marathon against other marathons to find the right race for your goals.
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