The Rock CF Thumb Coast Marathon, Half Marathon, and 5K is coming to Michigan on Sunday, November 8, 2026. This second year event offers a flat, fast, fully paved, USATF-certified course stretching across Michigan’s Thumb. The Marathon is a Boston Qualifier, and both the Marathon and Half will include pace teams from Beast Pacing to help you hit your goals. Starting in Caseville and finishing in downtown Port Austin, this point-to-point race delivers the perfect combination of speed, scenery, and small-town charm. Whether you’re chasing a PR, running your first race, or planning a fall race-cation, the Rock CF Thumb Coast Marathon has it all.
Date: Sunday, November 8, 2026
Distances: Marathon, Half Marathon, 5K
Locations: Marathon starts in Caseville, Half Marathon in Sleeper State Park, 5K in downtown Port Austin—all finishing in Port Austin, Michigan
Course: Fully paved, flat, USATF-certified; Marathon is a Boston Qualifier
Your experience at the Rock CF Thumb Coast Marathon goes beyond the miles. Every step helps fund the Rock CF Foundation, a nonprofit dedicated to supporting individuals living with cystic fibrosis through awareness, advocacy, and action. By racing with us, you’re not only pushing your own limits—you’re helping power life-changing programs and research.
Ready to run Michigan’s Thumb? Don’t wait—register today for the Rock CF Thumb Coast Marathon, Half Marathon, and 5K on November 8, 2026 and be part of a flat, fast, meaningful race experience on the shores of Lake Huron.
Nov 08, 2026
Distance — 5K
Type — Running
00:00
$50.00
Nov 08, 2026
Distance — 13.1 Miles
Type — Running
00:00
$50.00
Nov 08, 2026
Distance — 26.2 Miles
Type — Running
00:00
$50.00
Nov 08, 2026
Distance — 26.2 Miles
Type — Running
08:00
$75.00
Nov 08, 2026
Distance — 26.2 Miles
Type — Running
08:00
$115.00
Nov 08, 2026
Distance — 13.1 Miles
Type — Running
08:30
$55.00
Nov 08, 2026
Distance — 13.1 Miles
Type — Running
08:30
$95.00
Nov 08, 2026
Distance — 3.1 Miles
Type — Running
09:00
$35.00
Nov 08, 2026
Distance — 5K
Type — Running
09:00
$23.00
These values represent the 3-year monthly averages for November in Port Austin.
Port Austin is a village in Huron County in the U.S. state of Michigan. The population was 664 at the 2010 census. The village is within Port Austin Township.
Read more launchExplore other exciting events happening in this same region.
location_on Caseville, Michigan, US
calendar_today Apr 25, 2026
Hand-picked events we think you’ll love.
Nov 21, 2026
The RUN Manatee 5k series offers THREE adventures to celebrate ONE community. Participants will discover Manatee County…
Read more
Nov 28, 2026
Join us for the annual Turkey Trails 5k/10k! A fun, Thanksgiving-themed event that is perfect for the whole family.The…
Read more
Dec 13, 2026
Join us for the annual Candy Cane Course 5k/12k! A fun, Christmas-themed event that is perfect for the whole family.Th…
Read more
Mar 21, 2027
WE ARE NOW OFFERING AN AQUABIKE DIVISION! Triathlon Information:Join us for the annual Space Coast Triathlon, held in …
Read more