Thanks for that. However, I think there's beautiful cycling, with plenty of options east and south Of Lake Placid, which is why I'd make it my western limit. From lake Placid, there's one road south east through Keene, then the OP can stay west in the foothills toward Lake George, or continue southeast towards Ticonderoga and points south, and loping back into VT.

As I said, I happen to really like the NYS side of the lake all the way to Whitehall, from where the VT side is equally nice.