The Rock CF Thumb Coast Marathon
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Event overview
The Rock CF Thumb Coast Marathon, Half Marathon, and 5K takes place on Sunday, November 8, 2026, on Michigan’s Thumb Coast. The event is produced by Trivium Racing in partnership with the Rock CF Foundation. The courses are fully paved, flat, and USATF-certified; the Marathon is listed as a Boston qualifier. Pace teams from Beast Pacing are provided for the Marathon and Half Marathon. Proceeds support the Rock CF Foundation and its work for people living with cystic fibrosis.
Race details
Distances and formats include:
- Marathon - point-to-point from downtown Caseville to downtown Port Austin
- Half Marathon - from Sleeper State Park to Port Austin
- 5K - loop around downtown Port Austin
- Economy and virtual options are offered, including virtual Marathon, Half, and 5K events.
Registration information in the event listing shows opening on January 1, 2026. Listed entry fees include standard and economy options (examples shown in the event materials: Marathon $95, Economy Marathon $65; Half Marathon $75, Economy Half $45; 5K $35, Economy 5K $23; Virtual races $50). The race materials note that people with cystic fibrosis may register at no cost via the race contact process. Additional published pages cover aid stations, pacers, shuttle and parking details, awards and timing, and an athlete guide. Visit the organization's website for the most recent information.
