Answer
The rally typically runs mid-September for about five days—recent editions have been scheduled around September 9–13. Dates are set under multi-year Town contracts but can shift—verify on ocrockandride.com and Town announcements before booking non-refundable lodging.
Sources: OC Rock and Ride · Town of Ocean City · Visit Ocean City
Editorial visitor guidance for Ocean City, Maryland. Confirm current Town of Ocean City, Maryland DNR, NPS Assateague, and NWS rules when regulations or safety apply.
