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

  • Date Sun 2nd November 2025
  • Location Port Austin, Michigan
  • Price $44.00 - $101.70
  • Races 3 races
  • Distances 5km, Half Marathon

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Event summary

Get ready for an unforgettable day of running at the Rock CF Thumb Coast Marathon, Half Marathon, and 5K on Sunday, November 2, 2025! Set against the breathtaking backdrop of Lake Huron, this event kicks off in historic downtown Caseville and winds its way to the picturesque finish line in Port Austin. Runners of all levels can join in on the excitement, whether you're tackling the full marathon, the half marathon starting from Sleeper State Park, or the fun 5K loop around downtown Port Austin.

Not only will you enjoy a flat and fast course designed for personal bests, but you'll also be supporting a meaningful cause. Proceeds from the event directly benefit the Rock CF Foundation, which is dedicated to improving the lives of those living with cystic fibrosis across the country. Mark your calendars for this inspiring day of community, competition, and compassion!

Organiser's Description

The Rock CF Foundation and Trivium Racing are excited to bring to life the Thumb Coast Marathon: a flat, fast course featuring stunning views of Lake Huron. Starting in historic downtown Caseville, this point-to-point course will travel east with a downtown finish in beautiful Port Austin.

Your experience at this coastal marathon goes beyond just your own personal goals, as proceeds from this event go directly towards the Rock CF Foundations mission to support those living with cystic fibrosis around the country.

The Full Marathon will start in Caseville and finish in Port Austin, whereas the Half Marathon will start in Sleeper State Park and finish at the same location in Port Austin. The 5K will be a loop around downtown Port Austin, featuring the same finish line as the Full and Half. Detailed maps of all courses will be posted soon.

Races

  • Marathon

    Incl. $6.70 Fee & T-Shirt

    Sun 2nd November 2025 (8:00AM EST)

    $101.70

  • Half Marathon

    Incl. $5.50 Fee & T-Shirt

    Sun 2nd November 2025 (8:30AM EST)

    $80.50

  • 5k

    Incl. $4.00 Fee & T-Shirt

    Sun 2nd November 2025 (8:30AM EST)

    $44.00

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Location

8774 Lake St. Port Austin, Port Austin, 48467, MI, United States

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Nov 2, 2025

$44.00 - $101.70