Race Discovery
Rock CF Rivers Half Marathon & 5K
Rock CF Rivers Half Marathon & 5K logo

2026 - Rock CF Rivers Half Marathon & 5K

Grosse Ile, Michigan, United States View on map
Mar 22, 2026 (America/Detroit local time)
Running

2026 distances

Running

Half Marathon

The Half Marathon starts & finishes Grosse Ile Middle School.

Mar 22, 2026 Half-Marathon 8:00 AM
$85.00
Closed

15K

The 15K will start with the Half Marathon at Grosse Ile Middle School and finish at the GI Airport.

Mar 22, 2026 15K 8:00 AM
$70.00
Closed

5K Run/Walk

The 5K starts at the GI Airport and finishes at Grosse Ile Middle School! Participants can gather in hangar before headed to the start line south of the hangar.

Mar 22, 2026 5K 8:15 AM
$40.00
Closed

Virtual Run

Mar 22, 2026 Virtual Run 8:00 AM
$50.00
Closed

Course

No course map published yet.

The organizer hasn't released a route for this event, and we don't publish guesses. If you're the organizer, send us a GPX file and we'll draw the profile.

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Other races near Grosse Ile

Different organizers, within 40 miles, in the next three months

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Where this page comes from. Race details were last updated on . We re-check listings regularly and again in the week before race day.

  • Entries, prices, waves and inclusions — the event's official registration page
  • Temperature and humidity — Copernicus ERA5 reanalysis via Open-Meteo (CC BY 4.0)
  • Elevation and terrain relief — Copernicus DEM GLO-90, ESA (CC BY 4.0)
  • Comparisons and counts — Race Discovery calendar, 2 Grosse Ile events

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