Yankee John from Rexford NY and Vermont on 10/2/2020 3:21:32 PM:
There are several strings on this forum regarding the question of road bikes and tires. In general it seems there is agreement that a road bike with road tires is fine. One rider commented that they rode the entire trail with slicks without a problem. Much of the trail is paved but in the western end there are long sections of packed stone dust that can get a little squirrely when it's wet after a rain. There are a few short sections of two track packed dirt and grass, but those are currently being paved or converted to stone dust.
I've ridden the entire trail, some of the sections several times, on a steel frame road bike with city/trekking style 700x32 Kenda tires. My riding companions have ridden road bikes or hybrid bikes with similar tires. If you have the inclination to change your tires and have skinny slicks, consider changing to a fatter hybrid/trekking style tire.