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

Event Details

Experience the beauty of Michigan's Thumb Coast with the Rock CF Thumb Coast Marathon, Half Marathon, and 5K on November 2, 2025. This event features a flat, fast course that begins in historic downtown Caseville and finishes in beautiful Port Austin.

Course Information

• Marathon: Starts in Caseville, ends in Port Austin - 26.2 miles
• Half Marathon: Starts at Sleeper State Park, ends in Port Austin - 13.1 miles
• 5K: A loop around downtown Port Austin - 3.1 miles

Start Times

Marathon: 8:00 AM
Half Marathon: 8:30 AM
5K Run/Walk: 9:00 AM

Pricing

Marathon

• $95 until June 1, 2025
• $110 until August 1, 2025
• $120 until November 2, 2025

Half Marathon

• $75 until June 1, 2025
• $80 until August 1, 2025
• $85 until November 2, 2025

5K

• $40 until November 2, 2025

Registration ends for the 5K on November 2, 2025, at 10:00 AM.

Proceeds

All proceeds from this event go directly to the Rock CF Foundation to support those living with cystic fibrosis.

Location

8774 Lake St, Port Austin, MI 48467, USA