The Rock CF Thumb Coast Marathon
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Event Overview
The Rock CF Thumb Coast Marathon, Half Marathon, and 5K is an athletic event held in Michigan's Thumb region. This point-to-point race features a flat, fully paved course that stretches along the Lake Huron shoreline. The event is scheduled for Sunday, November 8, 2026, and offers participants a variety of race distances including:
- Marathon
- Half Marathon
- 5K Run/Walk
- Virtual Marathon
- Virtual Half Marathon
- Virtual 5K
The Marathon and Half Marathon courses are USATF-certified. The Marathon serves as a Boston Qualifier. Both long-distance events include pace teams from Beast Pacing to assist participants in reaching specific time goals.
The race logistics vary by distance. The Marathon begins in downtown Caseville, the Half Marathon starts at Sleeper State Park, and the 5K starts in downtown Port Austin. All three distances conclude at a common finish line in downtown Port Austin.
Proceeds from the event support the Rock CF Foundation, which works to assist individuals living with cystic fibrosis. Registration options include both standard and economy tiers for the different distances. The event is co-hosted by Trivium Racing and follows the route of the Thumb Coast coastline during the autumn season. Visit the organization's website for the most recent information.
