I've ridden part of the lower section
, Greenfield to S. Woodstock, VT. There is actually a fair amount of pavement on the route, about 40% in my estimation. This is my first season on dirt and I only had one pucker moment. For the most part the dirt sections are on town maintained roads and in good condition.
There's a recent Ride Report
on a group that did it. Unfortunately one of the members of the party was hurt on the route.
Nothing nasty on the PDR.