Perkiomen Trail By hiyata99 in 8/19/2012 4:12:55 PM | Nice well maintained trail that follows the perkiomen most of the way. We'll be back for another visit. D & L Trail - Asher F. Boyer Trail (Slatington-Northampton) An easy 11 miles By hiyata99 in 8/19/2012 4:06:53 PM | Great bike trail which is well maintained. A flat trail which follows the Lehigh river is mostly shaded though there are some stretches in the sun. We'll be back again in the fall.