The Rock CF Thumb Coast Marathon, Half Marathon & 5K

NOV
8
2026
Point-to-point road races along Lake Huron from Caseville to Port Austin, with marathon, half, 5K and virtual options; the marathon is a Boston qualifier.
Sun 8 Nov 2026
26 miles 13 miles 5 kilometers 3 miles

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The Rock CF Thumb Coast Marathon, Half Marathon & 5K

The Rock CF Thumb Coast Marathon, Half Marathon & 5K takes place on Sunday, November 8, 2026. It is the event's second year and features a USATF-certified, fully paved course that runs along the Lake Huron coastline.

The race is point-to-point, starting in Caseville and finishing in downtown Port Austin. The course is described as flat and fast. The Marathon is a Boston Qualifier. Pace teams are provided in the Marathon and the Half Marathon.

The event offers multiple participation options:

  • Marathon - 26.2 Miles (Boston Qualifier)
  • Economy Marathon - 26.2 Miles, no sweatshirt or finisher's medal
  • Half Marathon - 13.1 Miles
  • Economy Half Marathon - 13.1 Miles, no sweatshirt or finisher's medal
  • 5K - 3.1 Miles
  • Economy 5K - 3.1 Miles, no sweatshirt or finisher's medal
  • Virtual Marathon - 26.2 Miles, packets will be mailed
  • Virtual Half Marathon - 13.1 Miles, packets will be mailed
  • Virtual 5K - 3.1 Miles, packets will be mailed

The description notes coastal scenery and a finish in a small-town downtown area. Economy options omit a race sweatshirt and finisher's medal; virtual options include mailed race packets. Visit the organization's website for the most recent information.

26 mi
Economy Marathon
26 mi
Marathon
13 mi
Economy Half Marathon
13 mi
Half Marathon
5 km
Economy 5k
3 mi
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