Orienteering is an international sport combining both physical and mental elements. The very basic idea in orienteering is to visit a number of control points in a predetermined order with the only help of map and compass. Orienteers could decide their own route choice of each leg (the course between two individual control points), by looking at different features of the terrain. The one who completes the whole course with the fastest time is the winner. The uniqueness of orienteering is that a orienteer has to navigate, make quick decisions and maintain a high speed simultaneously.