Not to Philly, but to Pittsburgh, yes. I'll explain:

The Pennsylvanian is the Amtrak train that runs between the two cities, originating in New York and terminating in Pittsburgh. It runs entirely on Amtrak-owned and operated rail from New York to Harrisburg, initially via the Northeast Corridor to Philadelphia, then to Harrisburg via the Keystone Corridor. These two sections are some of the only electrified rail lines in the entire country. From Harrisburg, the Pennsylvanian switches over to Norfolk Southern's Pittsburgh Line, which is the line that runs through Horseshoe Curve. It runs through twice a day, once eastbound in the mid to late morning and once westbound in the late afternoon.