Abstract: A GPS-based portable golf distance indicator and a method for sharing map data using the same. The GPS-based portable golf distance indicator includes a GPS receiver for receiving a GPS signal from a GPS satellite and outputting coordinate data of a current location based on the received GPS signal, a keypad for executing a driving distance notification menu for notifying a driving distance of a ball or a distance notification menu for notifying a distance from the current location to a hole cup or selecting a location registration menu, a memory for storing map data of a golf course, a processor for calculating and controlling, and a power supply. When selecting the location registration menu, the processor receives the coordinate data of the current location from the GPS receiver and registers coordinate data of a target object location on the golf course in the map data.