You could comfortable drive 1000 miles one way, driving 200 miles a day for a total of 2000 miles over 10 days. From Scranton, PA, you could travel that distance easily, if you drove only 4 hours every day at 50 mph. You could travel from Scranton, PA to Kansans City, Iowa. Or to West Palm Beach, Florida. Or anywhere North East including all of Maine and a BIG chunk of Canada. Or as far as Warroad, Wisconsin (and all of Canada North of that too!)
I suggest, pick any spot East of Kansas City, Kansas and throw a dart at it. Let that be your destination point! Divide that distance by 5 (5 days driving there, and 5 days driving back). Study the maps and take a slightly different route back home. Drive, spend the night at a KOA, easy in, easy out. Explore the area where ever you park for the night. Next morning, move on, explore another State Park, another attraction, another town or city 200 miles or so farther down the road.
If you are like me, the real fun is in the driving. I personally enjoy the driving, towing, and navigating, maybe even more than the actual destination.
Good luck, and enjoy! Have the trip of a life time!