Rock CF Rivers Half Marathon 2026

We are coming back to beautiful Grosse Ile, Michigan for the 15th Annual Rock CF Rivers Half Marathon, 15K (NEW!) & 5K. Mark your calendars, race date is March 22, 2026.

Registration here: https://runsignup.com/Race/MI/GrosseIle/rockcfrivers

Half Marathon: 800 spots
15K (NEW!): 300 spots
5K Run/Walk: 500 spots

Start Lines
Half Marathon- Grosse Ile MIDDLE School at 8:00am
15K- Grosse Ile MIDDLE School at 8:00am
5K- Inside of the Grosse Ile Naval Hangar at 8:15am


Finish Lines
Half Marathon- Grosse Ile MIDDLE School
15K- GI Airport
5K- Grosse Ile MIDDLE School


For more info, visit Rock CF Foundation: https://letsrockcf.org/rock-cf-half

Also check out other Sports events in Grosse Ile.