 PA 652 followed Old Eagle School Road north to King of Prussia, where the route turned east onto East Swedesford Road.At the location of the modern US 422/US 202 interchange, PA 652 turned north onto Guthrie Road, running alongside the right-of-way of what is now the US 422 expressway to North Gulph Road.PA 652 continued north on North Gulph Road to the Valley Forge National Historical Park, where it terminated at PA 23.