A guiding apparatus that is configured to be mounted in a vehicle, and that comprises: a current-position detecting unit that is configured to detect a current position of the vehicle; a vehicle-speed detecting unit that is configured to detect a speed of the vehicle; an object-information storage unit that is configured to store guidance output time information used for determining times required to provide voice outputs with guidance with respect to objects of interest; an object-candidate retrieving unit that is configured to determine a guidance point, at which a driver needs guidance, on a travel path of the vehicle on the basis of the current position of the vehicle detected by the current-position detecting unit and that is configured to retrieve one or more candidates for object of interest existing on the periphery of the determined guidance point; characterised in that the guiding apparatus further comprises a recognizable-range estimating unit that is configured to determine a guidance distance required to provide a voice output with guidance with respect to each candidate for object of interest retrieved by the object-candidate retrieving unit on the basis of the vehicle speed detected by the vehicle-speed detecting unit and the guidance output time information corresponding to each candidate for object of interest retrieved by the object-candidate retrieving unit and that is configured to estimate a recognizable range in which the driver can visually recognize the respective candidate for object of interest after the vehicle travels the determined guidance distance from a start of said voice output; an object retrieving unit that is configured to retrieve one or more objects of interest from the one or more candidates for object of interest existing in a respective recognizable range estimated by the recognizable-range estimating unit; a priority determining unit that is configured to determine a priority of each object of interest retrieved by the object retrieving unit; and a guidance control unit that is configured to perform control for providing guidance with respect to an object of interest retrieved by the object retrieving unit, wherein in cases where the object retrieving unit retrieves a plurality of objects of interest, the guidance control unit is configured to perform control for providing guidance with respect to the object of interest with a highest priority determined by the priority determining unit among the plurality of objects of interest retrieved by the object retrieving unit. a current-position detecting unit that is configured to detect a current position of the vehicle; a vehicle-speed detecting unit that is configured to detect a speed of the vehicle; an object-information storage unit that is configured to store guidance output time information used for determining times required to provide voice outputs with guidance with respect to objects of interest; an object-candidate retrieving unit that is configured to determine a guidance point, at which a driver needs guidance, on a travel path of the vehicle on the basis of the current position of the vehicle detected by the current-position detecting unit and that is configured to retrieve one or more candidates for object of interest existing on the periphery of the determined guidance point; characterised in that the guiding apparatus further comprises a recognizable-range estimating unit that is configured to determine a guidance distance required to provide a voice output with guidance with respect to each candidate for object of interest retrieved by the object-candidate retrieving unit on the basis of the vehicle speed detected by the vehicle-speed detecting unit and the guidance output time information corresponding to each candidate for object of interest retrieved by the object-candidate retrieving unit and that is configured to estimate a recognizable range in which the driver can visually recognize the respective candidate for object of interest after the vehicle travels the determined guidance distance from a start of said voice output; an object retrieving unit that is configured to retrieve one or more objects of interest from the one or more candidates for object of interest existing in a respective recognizable range estimated by the recognizable-range estimating unit; a priority determining unit that is configured to determine a priority of each object of interest retrieved by the object retrieving unit; and a guidance control unit that is configured to perform control for providing guidance with respect to an object of interest retrieved by the object retrieving unit, wherein in cases where the object retrieving unit retrieves a plurality of objects of interest, the guidance control unit is configured to perform control for providing guidance with respect to the object of interest with a highest priority determined by the priority determining unit among the plurality of objects of interest retrieved by the object retrieving unit.