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 for an exhilarating day of community spirit and fitness at the 15th Annual Rock CF Rivers Half Marathon & 5K, taking place on Sunday, March 22, 2026, in the beautiful Grosse Ile, Wayne. This exciting event features a half marathon, a new 15K race, and a 5K run/walk, all aimed at supporting the fight against cystic fibrosis. With the half marathon starting at 8:00 AM and the 5K kick-off at 8:15 AM, participants of all ages and skill levels can join together to outrun cystic fibrosis and promote awareness.
The scenic course winds through the picturesque landscapes of Grosse Ile, with the half marathon and 15K starting at Grosse Ile High School, while the 5K run/walk begins at the Grosse Ile Airport. Each step you take contributes to a vital cause, as 100% of the proceeds support the mission of the Rock CF Foundation. Whether you’re participating in person or opting for the virtual run, this event promises to be an unforgettable day of camaraderie and achievement. Don’t miss out on this chance to make a difference and celebrate health and community!
The scenic course winds through the picturesque landscapes of Grosse Ile, with the half marathon and 15K starting at Grosse Ile High School, while the 5K run/walk begins at the Grosse Ile Airport. Each step you take contributes to a vital cause, as 100% of the proceeds support the mission of the Rock CF Foundation. Whether you’re participating in person or opting for the virtual run, this event promises to be an unforgettable day of camaraderie and achievement. Don’t miss out on this chance to make a difference and celebrate health and community!
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
OPENS 08 SEPNEW for 2025: The half marathon starts & finishes Grosse Ile HIGH School! * No race festivities will happen at the Middle School except for some limited race parking. -
5K Run/Walk
Incl. $3.40 Fee & Long Sleeve Tech Shirt
Sun 22nd March 2026 (8:15AM EDT)
$43.40
OPENS 08 SEPThe 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
OPENS 08 SEP -
15k
Incl. $5.20 Fee & T-Shirt
Sun 22nd March 2026 (8:00AM EDT)
$75.20
OPENS 08 SEPThe 15K will start with the Half Marathon at Grosse Ile High School. 15K Finish is on Groh Rd. by the airport.
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