The Rock CF Thumb Coast Marathon
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Event overview
The Rock CF Thumb Coast Marathon, Half Marathon, and 5K takes place on Sunday, November 2, 2025, in Port Austin, Michigan. The event is point-to-point, running from Caseville to downtown Port Austin. The courses are fully paved, described as flat, and are USATF-certified. The Marathon is a Boston Qualifier. Pace teams from Beast Pacing will be available for the Marathon and Half Marathon. Race proceeds support the Rock CF Foundation.
Race details
Start locations are listed as downtown Caseville for the Marathon, Sleeper State Park for the Half Marathon, and downtown Port Austin for the 5K. All races finish in Port Austin, Michigan. Distances include:
- Marathon
- Half Marathon
- 5K
The event also offers virtual race options and economy registration tiers. Participant items and referral incentives are included in the event information. The race is produced in partnership with Trivium Racing and lists local sponsors and partners. Race rules note a refund and transfer policy and that entries cannot be deferred to another year. Visit the organization's website for the most recent information.