Systems, methods, and programs detect a current position of a movable body, identify a destination for the moveable body, and search for a going route from a departure point to the destination. The systems, methods, and programs search for a returning route from the destination to the departure point and select a landmark for a branch point along the returning route. While the current position is moving along the going route, the systems, methods, and programs provide returning-route guidance regarding the branch point using the selected landmark.