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

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

Athlete Guide

See the 2025 Athlete Guide to provide you with helpful information as you plan.  As the race gets closer, the Athlete Guide will be updated frequently.  

Rock CF Thumb Coast Marathon - Pre-Race Information Meeting: https://youtu.be/gj8wmwU2sDs

On the Detour Maps the orange lines are hard closures - large barricades, police/security/volunteers, directly at the race course. You cannot move or go around these; you'd be on the race course and runners would be unsafe. DO NOT DRIVE on M25 during the race times.

The yellow lines are soft closures. They let you know you're about to come up on a hard closure. You can go around them if needed.

Click the icon below to download the attached PDF.

PDF

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