Larry, I would recommend heading over to Scranton, PA and pick up I-81 and follow it to I-77 south of Ronoke, VA to Charlotte, then I-85 north to the Speedway. No tolls on this part of the route. An alternate route would be in Ronoke take US 220 to Greensboro, NC and then I-85 south to the speedway. US 220 is about 15 minutes longer, but a very nice divided 4 lane US highway with a 55 mph speed limit.. I-77 in the last 40 miles to Charlotte is usually very heavy traffic, and easy to get stuck for hours if there is an accident.