Race Map
This is the course map for the 15th Annual Rock CF Rivers Half Marathon and 5K Run/Walk.
NOTE IMPORTANT! The Start/Finish for the Half Marathon will be at the Grosse Ile HIGH School. Not the Grosse Ile Middle School. The 5K Start will still take place at the Grosse Ile Airport and now finish at the Grosse Ile High School, as well. This is the same as what happened in 2025.
