I'm a little late to this thread but excellent idea and good work! I looked a little for any connectivity to old dirt roads I used to ride enduros on in the 70s outside Covington VA centered around Jingling Rocks Road
that ran up and along Peters Mountain. Not sure about it but thought I'd offer up that area just in case. Haven't ridden up there in a while but it was pretty awesome in the day. Used mostly for logging now I believe but it's public.