Orienteering is an outdoor sport that uses maps to navigate between control points. Participants are given an orienteering map showing hills, valleys, and the course marked with triangles, circles, and double circles. Control points are marked in the terrain by flags, and competitors must punch a control card at each point to prove they completed the course correctly. The winner is the one who finds all control points in the fastest time, navigating with the help of an orienteering compass.