A navigation device includes a data transmission-reception portion for performing data transmission and reception with a portable terminal, an address list cooperation portion for receiving address list data, a schedule cooperation portion for receiving and managing schedule data, a candidate location specifying information recording portion for searching and extracting information for specifying a location corresponding to one schedule item from the address list data concerning a schedule indicated in schedule data to record the extracted information, a position specifying information obtaining portion for obtaining position specifying information for specifying a position on a map corresponding to each piece of candidate location specifying information, a selecting portion for selecting one position specifying information from position specifying information, and a path managing portion for determining a position of each destination on the path in accordance with the selected position specifying information to manage the path information.