Just left the area, daughter lives down in the bowels of Philly. Drive from KOA was about 1 hour, if there wasn't a jam and if the traffic was flowing. Depending on what you want. If your goal is downtown looking at Philly, I would use Timberlane or Park & Ride. If you want beautiful countryside at the end of the day to sip a glass of wine, go to the KOA. There is another campground up in Hatfield but the drive down to Philly sucks too, and that campground is bla. If you stay at the KOA, PM me and I will provide you with a great route to take into town (well, better than the GPS).