Saturday, April 25

Thumb Coast Ultra & Relay

Experience the ultimate adventure at the Thumb Coast Ultra & Relay, presented by Trivium Racing in the scenic town of Caseville, Huron, Michigan on April 25, 2026. This extraordinary event challenges participants to push their limits as they race from dawn till dusk along a breathtaking course linking the tranquil shores of Lake Huron to Saginaw Bay. Offering a choice of a 50-mile trek or a 50-kilometer out-and-back path, runners of all levels can take on the challenge of mostly dirt and unimproved roads with just 500 feet of elevation gain for the 50-mile race and 300 feet for the 50-kilometer option. With ample cutoff times and special rewards for those who "beat the sun," the Thumb Coast Ultra ensures an exhilarating journey with well-marked routes and fully equipped aid stations. Beyond the race, the Thumb region beckons with delightful accommodations, delectable dining, and family-friendly attractions, making it a must-visit destination for a day filled with adventure, camaraderie, and the splendor of Michigan's hidden gem.