Thumb Coast Ultra

APR
25
2026
Read all about the Thumb Coast Ultra on 25 Apr 2026 in Caseville.
Sat 25 Apr 2026
50 miles 50 miles 50 kilometers

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About the race

Thumb Coast Ultra & Relay is a spring ultramarathon event in Michigan’s Thumb region, featuring a 50-mile point-to-point course from Harbor Beach on Lake Huron to Caseville on Saginaw Bay, plus a 50K out-and-back and a 50-mile relay. The mostly dirt-road route traverses open farmland and lakeshore scenery with around 500 feet of gain for the 50M and ~300 feet for the 50K. The course is well marked with generous cutoffs and ample aid stations.

Runners, walkers, and teams can chase the sunset, with special finish prizes for those who beat the sun. Registration includes jacket, medal, photos, and post-race meals. Visit the organization's website for the most recent information.

50 mi
50 Mile
50 mi
50 Mile Relay
50 km
50k

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