What is halfway driving distance between Philadelphia PA and Atlanta GA?

Durham, NC area (If you are taking 95 South and heading over to 85 South).about 6 hours 40 mins between both points.

However, Burlington, NC about 45 minutes from Durham has cheaper gas and hotels than both Durham and nearby Greensboro. Burlington is 5 1/2 hours from Atlanta and 7 1/2 hours from Philadelphia.