Rock CF Rivers Half Marathon

The 15th Annual Rock CF Rivers Half Marathon & 5K takes place on Grosse Ile, Michigan, featuring a half marathon, 5K run/walk, a new 15K, and a virtual run option. The event supports the Rock CF Foundation, dedicated to improving the lives of those with cystic fibrosis. Races start and finish at Grosse Ile High School, with the 5K beginning at the Naval Station Hangar.

The course offers scenic views of the island, and shuttles provide transportation between key locations. The event fosters a strong community atmosphere, encouraging participants to help "outrun cystic fibrosis" while enjoying a well-organized race weekend. Visit the organization's website for the most recent information.