There are two ways to get around the Frontier and the Rim: you can follow a safe, known route and waste a little time with stop-overs or you can go the rough way and start up your Astrogation routines.  To figure out how far you have to go means pulling out your favorite map and counting squares.  This little Excel spreadsheet takes the counting out and gives you a fast and easy way to calculate the paths: direct and following the safe, known routes.