A Boston-qualifying marathon and half marathon along Lake Ontario, starting and finishing at Madison Barracks Polo Field in Sackets Harbor. The 2027 event is scheduled for Sunday, September 5, 2027, with both races starting at 7:00 a.m. ([sacketsharbormarathon.com](https://www.sacketsharbormarathon.com/?preview=racemonth&utm_source=openai))