A navigation system for guiding a moving object from a current position to a destination includes a setting device that sets the current position and the destination, a sensor that detects movement of the moving object, a computing device that calculates move distance that the moving object has moved from the current position based on data outputted from the detecting sensor, and that determines a position of the moving object by shifting the calculated move distance from the current position on path data between the current position and the destination, which has been obtained by a path planning. The navigation system further includes a display device for displaying path guidance information depending on the determined position of the moving object.