It is 428.37 miles according to MapQuest.
It is 75 miles.
The majority of Pa's eastern border is against New Jersey (across the Delaware River.) In the far northeast of PA it borders with New York state. In the far southeast it have a short border with Delaware.
it took me about a couple hours so .. but it depend where in PA or DE you are :)
Montgomery PA
Fredericksburg VA
On the New Jersy border, at the confluence of the Lehigh and Delaware Rivers about halfway between Philadelphia and New York City.
what gas stations sell kerosene in Delaware County Pa.
It is in Delaware County.
"Security and Liability" - Aqua PA
The Delaware river
At present, the only toll on I-80 in NJ and PA is the Delaware Water Gap Toll Bridge across the state line between them. However, the state of Pennsylvania has (so far unsuccessfully) tried to change all of I-80 in PA into a toll road.