15th Annual Rock CF Rivers Half Marathon & 5K
- Date Sun 22nd March 2026
- Time 8:00AM EDT
- Location Grosse Ile, Michigan
- Price $43.40 - $91.10
- Races 4 races
- Distances Half Marathon, 5km
Event summary
Get ready to lace up your running shoes for the 15th Annual Rock CF Rivers Half Marathon & 5K, taking place on Sunday, March 22, 2026, in the scenic Grosse Ile, Wayne! This exhilarating event is more than just a race; it's a powerful community gathering aimed at outrunning cystic fibrosis. Participants can choose from three exciting distances: the challenging Half Marathon, the new 15K, or the popular 5K Run/Walk.
The Half Marathon kicks off at 8:00 AM, starting and finishing at Grosse Ile High School, while the 15K also begins at 8:00 AM, with its finish line located at the Grosse Ile Airport area. The 5K Run/Walk starts shortly after at 8:15 AM from Grosse Ile Airport, concluding back at the high school. With a vibrant atmosphere, exhilarating camaraderie, and the knowledge that 100% of proceeds support the Rock CF Foundation, this event promises to be an unforgettable experience for runners and walkers alike. Don't miss out on being part of this meaningful day, whether you join us in person or participate virtually!
The Half Marathon kicks off at 8:00 AM, starting and finishing at Grosse Ile High School, while the 15K also begins at 8:00 AM, with its finish line located at the Grosse Ile Airport area. The 5K Run/Walk starts shortly after at 8:15 AM from Grosse Ile Airport, concluding back at the high school. With a vibrant atmosphere, exhilarating camaraderie, and the knowledge that 100% of proceeds support the Rock CF Foundation, this event promises to be an unforgettable experience for runners and walkers alike. Don't miss out on being part of this meaningful day, whether you join us in person or participate virtually!
Organiser's Description
THE ROCK CF RIVERS HALF MARATHON IS BACK!
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 [https://letsrockcf.org/].
CAPS FOR 2026
Half Marathon Cap = 800
15K Cap = 300
5K Run/Walk Cap = 500
HALF MARATHON
START TIME: 8:00am
START LOCATION: Grosse Ile HIGH School [https://maps.app.goo.gl/QmRhud1QW6BP3NZw7]
FINISH LOCATION: Grosse Ile HIGH School
_________________________________________________________________________________________________________________________
15K
Start Time: 8:00am
Start Location: Grosse Ile HIGH School
Finish Location: Grosse Ile Airport Area [https://maps.app.goo.gl/xJRA5U6KmddAHSqeA]
________________________________________________________________________________________________________________________
5K RUN/WALK
START TIME: 8:15 am
START LOCATION: Grosse Ile Airport [https://maps.app.goo.gl/Q8zbyfG1VNWE7ZL9A](Naval Hangar)
FINISH LOCATION: Grosse Ile HIGH School
_________________________________________________________________________________________________________________________
VIRTUAL RUN
We will be sending out packets the week of the race so that you can participate with us from wherever you are! Whether that be a walk around the block or a full half marathon, we can't wait to see what you accomplish. Be sure to tag us on our socials @LetsRockCF so we can share your journey and runs!
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 [https://letsrockcf.org/].
CAPS FOR 2026
Half Marathon Cap = 800
15K Cap = 300
5K Run/Walk Cap = 500
HALF MARATHON
START TIME: 8:00am
START LOCATION: Grosse Ile HIGH School [https://maps.app.goo.gl/QmRhud1QW6BP3NZw7]
FINISH LOCATION: Grosse Ile HIGH School
_________________________________________________________________________________________________________________________
15K
Start Time: 8:00am
Start Location: Grosse Ile HIGH School
Finish Location: Grosse Ile Airport Area [https://maps.app.goo.gl/xJRA5U6KmddAHSqeA]
________________________________________________________________________________________________________________________
5K RUN/WALK
START TIME: 8:15 am
START LOCATION: Grosse Ile Airport [https://maps.app.goo.gl/Q8zbyfG1VNWE7ZL9A](Naval Hangar)
FINISH LOCATION: Grosse Ile HIGH School
_________________________________________________________________________________________________________________________
VIRTUAL RUN
We will be sending out packets the week of the race so that you can participate with us from wherever you are! Whether that be a walk around the block or a full half marathon, we can't wait to see what you accomplish. Be sure to tag us on our socials @LetsRockCF so we can share your journey and runs!
Races
-
Half Marathon
Incl. $6.10 Fee & Long Sleeve Tech Shirt
Sun 22nd March 2026 (8:00AM EDT)
$91.10
The Half Marathon starts & finishes Grosse Ile HIGH School! * No race festivities will happen at the Middle School except for some limited race parking. -
15k
Incl. $5.20 Fee & T-Shirt
Sun 22nd March 2026 (8:00AM EDT)
$75.20
The 15K will start with the Half Marathon at Grosse Ile High School. 15K Finish is on Groh Rd. by the airport. -
5K Run/Walk
Incl. $3.40 Fee & Long Sleeve Tech Shirt
Sun 22nd March 2026 (8:15AM EDT)
$43.40
The 5K starts inside of the Naval Hangar at GI Airport and finishes at Grosse Ile HIGH School! * No race festivities will happen at the Middle School except for some limited race parking. -
Virtual Run
Incl. $4.00 Fee & Long Sleeve Tech Shirt
$54.00
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7800 Grays Dr., Grosse Ile, 48138, MI, United States
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15th Annual Rock CF Rivers Half Marathon & 5K
