Rock CF Thumb Coast Marathon, Half Marathon, & 5K
Caseville, Michigan, United States
Nov 8, 2026 - Sunday
5k, Half-marathon, Marathon
Race Information
Fully paved, USATF Certified course on Michigan's Thumb Coast. The Rock CF Foundation and Trivium Racing are excited to bring to life the Thumb Coast Marathon: a flat, fast course featuring stunning views of Lake Huron. Starting in historic downtown Caseville, Michigan, this point-to-point course will travel east with a downtown finish in beautiful Port Austin, Michigan. The Full Marathon will start in Caseville and finish in Port Austin, whereas the Half Marathon will start in Sleeper State Park and finish at the same location in Port Austin. The 5K will be a loop around downtown Port Austin, featuring the same finish line as the Full and Half.
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👍 Run Pick of the Month: Pumpkin Glow Run
📍 Fenton, MI - October 30, 2026
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😄 Why We Like This Run
✅ 5k and Kids Fun Run
✅ Custom Dri-Fit Race Shirt, Finisher Medal, and Photos
✅ Race through Spicer Orchard filled with festive lights
Light up the night at the Pumpkin Glow Run, where Spicer Orchards transforms into a glowing autumn playground filled with festive lights, fall fun, and Halloween spirit. Cross the finish line and celebrate with fresh sweet cider and a pumpkin, then soak in an unforgettable evening under the stars!
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Race Facts
Race Size: 500 - 1,000
Elevation: Fast and Flat
Course Type: Road
Boston Qualifier: No
Kids Run: No
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