14th Annual Rock CF Rivers Half Marathon & 5K

Events

$80 8:00AM EDT - 11:30AM EDT Registration ends March 9, 2025 at 7:45am EDT

$40 8:15AM EDT - 11:30AM EDT Registration ends March 9, 2025 at 8:00am EDT

$50 Registration ends March 9, 2025 at 11:59pm EDT

Race Website

Additional race information can be found at https://letsrockcf.org/rock-cf-half.

Place

HALF MARATHON
Start Time: 8:00 am
Start Location: Grosse Ile Middle School (23270 E. River Rd. Grosse Ile, MI 48138)
Finish Location: Grosse Ile Middle School

5K RUN/WALK
Start Time: 8:15 am
Start Location: Outside of the Naval Station Hangar (south side) 9601 Groh Rd.- Across from GI Township Shuttle Parking Lots).
Finish Location: Grosse Ile Middle School
* Buses will take 5K participants that park at GI Township Lots back from the Finish!

Description

THE ROCK CF RIVERS HALF MARATHON IS BACK!

Sunday, March 9, 2025

Rock CF is hitting the island for the 14th Annual Rivers Half Marathon & 5K Run/Walk for all to come and help us outrun cystic fibrosis!

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.

Caps for 2025
Half Marathon Cap = 800
5K Run/Walk Cap = 500

HALF MARATHON

Start Time: 8:00am

Start Location: Grosse Ile Middle School

Finish Location: Grosse Ile Middle School

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5K RUN/WALK

Start Time: 8:15 am

Start Location: Grosse Ile Airport

Finish Location: Grosse Ile Middle School

Buses will take 5K participants that park at GI Township Lots back from the Finish!

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 haf 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!