Paved bike path stretches from Dennis along the old Penn Central Railroad into Wellfleet.. In Short This paved bicycle path, on the former Penn Central Railroad, starts in the heart of the Cape and ends on national seashore of the Outer Cape. You'll pass a junkyard when leaving Dennis--don't despair. The first cranberry bog is only a mile away. The trip quickly settles into a nice rhythm of pine trees, big pond, cranberries, tunnel, pine trees, big pond, cranberries. The last leg is a straight line for eight miles into Wellfleet.