The Rock CF Thumb Coast Marathon, Half Marathon, and 5K
About this race
Rock CF Thumb Coast Marathon, Half Marathon & 5K – November 8, 2026
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.
Race Details
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
Why Run Rock CF Thumb Coast Marathon?
- Fast & Flat: The Marathon and Half feature fully paved, USATF-certified courses, ideal for personal bests and Boston qualification.
- Pace Teams: Beast Pacing will guide Marathon and Half Marathon participants with consistent splits.
- Cool November Temps: Crisp, race-ready weather on Michigan’s Thumb sets the stage for strong performances.
- Run for a Cause: Every registration supports the Rock CF Foundation and its mission to improve the lives of people living with cystic fibrosis.
- Unique Experience: Traverse Michigan’s Thumb from one side to the other, while 5K runners loop around downtown Port Austin and finish in time to cheer on the Half and Full finishers.
- Race Extras: Participant swag includes exclusive gear, plus referral incentives that give you money back when friends join.
- Destination Vibes: Enjoy a fall weekend on Michigan’s Thumb Coast, complete with small-town hospitality, Lake Huron views, and a lively finish line atmosphere.
More Than Just a Race
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.
Pick your distance
Running
Marathon
Economy Marathon
This option is for those that want a great race, but not a race sweatshirt or finisher's medal.
Half Marathon
Economy Half Marathon
This option is for those that want a great race, but not a race sweatshirt or finisher's medal.
5K
Economy 5k
This option is for those that want a great race, but not a race sweatshirt or finisher's medal.
Virtual Marathon
Select the Virtual Race option and complete the race distance on your own time. Packets will be mailed.
Virtual Half Marathon
Select the Virtual Race option and complete the race distance on your own time. Packets will be mailed.
Virtual 5k
Select the Virtual Race option and complete the race distance on your own time. Packets will be mailed.
Typical race-day weather
Based on 1 year of Open-Meteo archive data for this event's race dates in Port Austin, plus the 3 days either side.
The sun rises at 7:18 AM and sets at 5:13 PM local time (EST) in Port Austin on November 8, 2026 — 9h 55m of daylight.
Course
No course map published yet.
The organizer hasn't released a route for this event, and we don't publish guesses. If you're the organizer, send us a GPX file and we'll draw the profile.
Reviews
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Results — The Rock CF Thumb Coast Marathon, Half Marathon, and 5K
Other races near Port Austin
Different organizers, within 40 miles, in the next three months
🏃 Plan Your Next Race in Port Austin
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Where this page comes from. Race details were last updated on . We re-check listings regularly and again in the week before race day.
- Entries, prices, waves and inclusions — the event's official registration page
- Temperature and humidity — Copernicus ERA5 reanalysis via Open-Meteo (CC BY 4.0)
- Elevation and terrain relief — Copernicus DEM GLO-90, ESA (CC BY 4.0)
- Comparisons and counts — Race Discovery calendar, 2 Port Austin events
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