A path generation device is configured to generate a path along which a mobile object is to travel. The device comprises a planner module configured to plan a steering angle and a steering angular velocity for the mobile object to travel from a start position to a goal position by generating first and second isosceles triangles connecting the start position and the goal position based on the start position of the mobile object, a start position traveling direction being a traveling direction of the mobile object at the start position, the goal position of the mobile object, and a goal position traveling direction being a traveling direction of the mobile object at the goal position. The device comprises a curved path applying module configured to apply a first curved path along legs of the first isosceles triangle and apply a second curved path along legs of the second isosceles triangle.