Rock CF Rivers Half Marathon
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Rock CF Rivers Half Marathon and Associated Races
The 15th Annual Rock CF Rivers event takes place on Grosse Ile and offers multiple race formats to support the Rock CF Foundation. The organizer states that 100% of all proceeds support the foundation's mission.
Available race options include:
- Half Marathon : 13.1 Miles
- 15K
- 5K Run/Walk : 3.1 Miles
- Virtual Run
Course locations are centered on Grosse Ile Middle School at 23270 E River Rd, Grosse Ile Township, MI 48138. The Half Marathon starts and finishes at Grosse Ile Middle School. The 15K starts at Grosse Ile Middle School and finishes in the Grosse Ile Airport area. The 5K begins near the Grosse Ile Airport (south of the Naval hangar) and finishes at Grosse Ile Middle School. For the 5K, participants may gather in the hangar area prior to moving to the start line south of the hangar.
Registration details in the event listing show an opening date of October 15, 2026, with event-specific closing dates on March 21, 2027. Listed entry fees are $85 for the Half Marathon, $70 for the 15K, $40 for the 5K, and $50 for the Virtual Run. Virtual participants are provided race packets the week of the event to enable remote participation. Visit the organization's website for the most recent information.
