15th Annual Rock CF Rivers Half Marathon & 5K

15th Annual Rock CF Rivers Half Marathon & 5K

Join us as we outrun cystic fibrosis! Sunday, March 22, 2026

Rock CF is hitting the island for the 15th Annual Rivers Half Marathon, 5K Run/Walk & NEW 15K! 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.

Courses and prices:

• Half Marathon: 13.1 Miles, $85.00
• 5K Run/Walk: 3.1 Miles, $40.00
• Virtual Run: $50.00
• 15K: 15K, $70.00

Race Weekend!
Saturday, March 21st: Race Expo @ Grosse Ile HIGH School (12:00 PM - 6:00 PM)
Sunday, March 22nd:
Half Marathon & 15K - 8:00 AM (Grosse Ile HIGH School)
5K Run/Walk - 8:15 AM (Grosse Ile Airport)