It is 541 miles according to google Maps.
Google Maps estimated the driving time as 77.7 miles.
Philadelphia to Portland is about 6 and 1/2 hours. Pittsburgh to Bangor is twice that.
I may not have an accurate answer so I'm not giving you a definite answer. so ill just tell you a good website to find this out. go to google.com/maps and type in your starting point and your destination.
Google Maps estimates the driving time as 11 hours and 26 mimutes.
About 4 hours and 44 minutes.
The Denver in Colorado is 26 hours from the Philadelphia in Pennsylvania.
To Philadelphia? About 4 hours driving.
It is 404.32 miles according to MapQuest.
From Philadelphia, Pennsylvania to Atlanta, Georgia is 658 miles.
The address of the Historic Rittenhouse Town is: 206 Lincoln Drive, Philadelphia, PA 19144
The address of the Lemon Hill Mansion is: Lemon Hill Drive, Philadelphia, PA 19130