The present disclosure relates to a method of setting a via-point in a navigation system. The method includes: inputting a plurality of starting places including a starting place of a driver and a starting place of a fellow passenger; when the starting place of the fellow passenger is selected as a via-point, searching for a route from the starting place of the driver to the destination of the driver and including the via-point; and when the starting place of the fellow passenger is not selected as the via-point, inputting various preferred traffic information about the fellow passenger, and calculating an optimum via-point for the fellow passenger to be included within a travelling route from the starting place of the driver to the destination of the driver.