answer:You could probably use Google Maps to plan out your route. Your biggest challenge finding a route and avoiding highways will be crossing the Susquehanna River. Unless you go about 25 miles out of the way through Holtwood, PA, you’re stuck with Route 1, Highway 40, I-95, or a long swim to cross the river. However, if you are willing to spend a couple of days to make the trip, it could be an enjoyable ride on the back-roads of northern Maryland and Southern PA. It’s quite beautiful country. Just beware of a fair amount of backwards people, complete with an abundance of rebel flags flying from houses along the roads.