Route 318 is a 10.9 mile long east/west State Highway that runs from Phelps to Seneca Falls. Route 318 starts at Route 14 just south of the Thruway. Route 318 runs roughly parallel to the Thruway for about five miles until it crosses Route 414. Then it veers south a little for a short while, then turning back straight east and ending at the Seneca Falls town line.
Waterloo Premium Outlets is located along Route 318.