You can use the charts, compass and clocks to navigate fairly accurately. When you plan your route, write down your waypoints and use waypoints that are very easy to see from the air. Set your map to where you can see the 5km. squares. Take off and go to your first waypoint which should be very close to your homeplate. By this time you should be getting close to 2,000 meters in altitude and airspeed around 300km. The 5km. squares should take one minute to cross at around 300km. So if you are going 2 squares to your next waypoint you know it will take two minutes to get there. Adjust your heading and go to the next waypoint, so on and so on. Use railroads, rivers, forests that have distinct outlines and roads for your paths to coorect you headings.