03/20/2026
We are 2 days out from this year's Rock CF Rivers Half Marathon, 15K & 5K and we hope you are as pumped as we are to join us on March 22, 2026!
REMINDER! This year, the Rock CF Rivers Half Marathon & 15K will start from Grosse Ile MIDDLE School. Not Grosse Ile High School. The 5K will still start from the Grosse Ile Airport, but it will now finish at Grosse Ile Middle School.
There is NO race parking at Grosse Ile Middle School or Grosse Ile High School on race day! Please refer to the below options to plan your race day logistics.
There are a few things that we wanted to remind you of as we get closer to race day, including parking, gear check, shuttles, and FAQs. All of this info and more can also be found on our race pages at https://letsrockcf.org/rock-cf-half
PARKING AND SHUTTLE INFO!
1) Township Shuttle Lots by Grosse Ile Airport: Beginning at 6am to GI Middle School
- Use the address: 9801 Intrepid, Grosse Ile Township, MI & enter off of Meridian Rd. only
- Please park where volunteers advise
- Half & 15K runners must board a bus to the Middle School for start & packet pickup
- Bus loading is on Saratoga Ave
- Buses will run continuously until race time & resume post race
- 5K runners do not board the shuttles. Your start & packet pickup is walkable, across Groh Rd
- Post Race: Buses will drive Half Marathon & 5K runners back to these lots from the Middle School
- 15K runners finish at the airport. This is across the street from these shuttle lots
We strongly encourage Half Marathon & 15K runners to arrive to the shuttle lots early, especially if you need to pick up your packet. Our suggestion is 90 minutes to allow time to park, and wait for bus loading. Shuttle time from the lots to the Middle School is 8-10 minutes but it will take longer with race traffic.
2) Grosse Ile Golf & Country Club *New this year!*: Beginning at 6am with shuttle to Middle School Only
- This lot will fill up early!
- Pre race shuttles will only run to the Middle School from the Country Club
- 5K runners that park here will need to ride the shuttle to the Middle School, then board a bus to the 5K area at the airport
- Post Race: Buses will drive runners from both finish areas back to the lot
3) Macomb Street (Select businesses with Race Parking Sign out front)
- Roughly 0.5 to 0.75 mile walk to the Middle School via the path behind the High School
- Please only park in lots that have a Race Parking sign out front
Fifth Third Bank, Building Blocks, Nate’s, Public Service Credit Union, Tails, Ralph’s Lawn, Island Goods (old lot), & lot at 7738 Macomb Parking Lot
- These lots are on Macomb between Parke Lane & E. River
- Note: The 15K Finish Line is at the airport. Runners that need to be shuttled to the Middle School or the Country Club can catch a shuttle here.
GEAR CHECK INFO!
- Half Marathon - Drop & Pick Up Inside of the GI Middle School Gym
- 5K - Drop at tent near 5K start/15K finish. Look for feather banner! Pick up in Middle School Gym
- 15K - Drop in Middle School Gym. Pick up at tent near finish line.
PACKET PICKUP!
Yes, you can pickup for other runners! Having your QR code handy from the confirmation email will make things quicker. Your next two opportunities for packet pickup are below:
Race Expo - Saturday, March 21
Location: Grosse Ile Middle School
23270 E River Rd, Grosse Ile, MI 48138
Time: 12:00pm - 6:00 p.m.
Saturday pick-up is for all race distances!
RACE DAY - Sunday, March 22
Grosse Ile Middle School - Half Marathon & 15K Pickup ONLY
Location: Grosse Ile Middle School
23270 E River Rd, Grosse Ile, MI 48138
Time: 6:00am until race time
Grosse Ile Pilot House - 5K Pickup & Registration ONLY
Time: 6:00am until race time
9645 Groh Rd, Grosse Ile Township, MI 48138
This is right across the street from the shuttle parking lots.
Join the Rock CF Rivers Half Marathon & 5K on Grosse Ile, MI—an inspiring race supporting the cystic fibrosis community. Run scenic island roads, make an impact, and help Rock CF keep pushing for change.
