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

Sun November 2, 2025 Port Austin, MI 48467 US Directions

Events

Marathon

Price: $120
Time: 8:00AM EST 2:00PM EST
Registration ends November 2, 2025 at 7:30am EST

Economy Marathon

Price: $90
Time: 8:00AM EST 2:00PM EST
Registration ends November 2, 2025 at 7:30am EST

Half Marathon

Price: $85
Time: 8:30AM EST 2:00PM EST
Registration ends November 2, 2025 at 8:00am EST

Economy Half Marathon

Price: $55
Time: 8:30AM EST 2:00PM EST
Registration ends November 2, 2025 at 8:00am EST

5K

Price: $40
Time: 9:00AM EST 2:30PM EST
Registration ends November 2, 2025 at 9:00am EST

Economy 5k

Price: $25
Time: 9:00AM EST 2:30PM EST
Registration ends November 2, 2025 at 9:00am EST

Virtual Races

Price: $50
Time: 12:00AM EDT
Events: Virtual Marathon Virtual Half Marathon Virtual 5k

Place

8774 Lake St. Port Austin
Port Austin, MI US 48467

Description

Rock CF Thumb Coast Marathon, Half Marathon & 5K – November 2, 2025


The Rock CF Thumb Coast Marathon, Half Marathon, and 5K is coming to Michigan on Sunday, November 2, 2025. This inaugural 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 2, 2025
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 2, 2025 and be part of a flat, fast, meaningful race experience on the shores of Lake Huron.

Race Contact Info

If you have any questions about this race, click the button below.

Presenting

Product/Gear/In Kind

Valued Sponsors

RaceJoy


Available for Apple and Android devices.

Interactive Race Day Experience with RaceJoy

Live Phone Tracking, GPS Progress Alerts and Cheers!

We are providing you with RaceJoy as part of the official race experience for The Rock CF Thumb Coast Marathon, Half Marathon, and 5K.

Download the RaceJoy mobile app in advance to ensure proper phone setup. Invite your friends and family to track you and send you cheers!

Some key RaceJoy features include:

GPS Progress Alerts

  • Receive continual progress updates as you complete your goal.

Live GPS Tracking

  • Remote spectators can track your progress live in a map view. You can also track others.

Send-a-Cheer

  • Receive supportive audio cheers from remote friends & family.

Virtual Results (virtual events only)

  • Enter your race-assigned bib number to automatically submit your finish data for real-time scored results.
To use RaceJoy, you must carry your phone and activate tracking on the day you complete your race.
View RaceJoy How-To

Directions

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