GI – Annual Rock CF Rivers Half Marathon @ Grosse Ile HIGH School Tickets Mar 9 @ 8:00 am Rock CF is hitting the island for the 14th Annual Rivers Half Marathon & 5K Run/Walk on Sunday, March 9th, 2025 for all to come and help us outrun cystic fibrosis! Rock CF is a community, thousands strong, changing the face of what living with cystic fibrosis looks like and giving those living with CF the tools to not only survive, but thrive. 100% of all proceeds support the mission of the Rock CF Foundation. Register here: https://runsignup.com/Race/Register/?raceId=169581 Read more Categories: Fundrasier Grosse Ile Runs and Walks