A travel route evaluation system is provided which is capable of enhancing the driver's consciousness of traveling on the a recommended route, in order to improve a degree of attainment of purposes, such as suppression of a fuel consumption and shortening of a required time, that would be obtained by presenting the recommended route.The system includes: a route setting unit for setting a recommended route from a departure point to a destination, based on traveling environment information associated with a traveling environment of a vehicle and map data, a ratio calculation unit for calculating a recommended route travel ratio which is a proportion of the recommended route in a traveled route on which the vehicle traveled; and an evaluation information acquisition unit for acquiring evaluation information based on the recommended route travel ratio.