A route guidance method provides route guidance from a current position to a destination by using a navigation apparatus capable of displaying a route from the current position to the destination in combination with a portable terminal carried by a user. The navigation apparatus produces a 2-dimensional code based on information associated with the destination and a location at which the user leaves his/her car en route to the destination and displays the thus produced code. The portable terminal acquires the information associated with the location at which the user leaves his/her car and the destination by reading the 2-dimensional code displayed by the navigation apparatus.