Routing is considered as one of the primary actions of a route design operation, and due to its significant role in how the route is placed in relation to other facilities, the environment, and its adjacent complications, on the one hand, and the significant impact that it has on costs On the other hand, the implementation of the route should be carefully checked. At the same time as sustainable growth and development and fundamental developments in economic, social, and cultural affairs, the role of the road network appears as one of the important and fundamental parts in further development; In addition to the potential resources and talents, it makes the land fertile and provides the ground for growth and prosperity. Including correct and comprehensive criteria in the route determination stage can play a major role in reducing economic costs, increasing safety, and road accessibility and preserving the environment. For this purpose, in the current research, several factors such as slope, height, land use, geology, landslide, distance from the fault, distance from urban centers have been considered for optimal routing on the Rudsar route. Therefore, in the current research, the shortest route on the Yasouj-Isfahan axis has been determined. The research method in this research is descriptive-analytical and ArcGIS software and AHP model were used for data analysis. According to the optimal route, it was chosen using this method due to its location on a suitable slope and proximity to economic centers and far from the fault. The obtained results show that the obtained route is shorter than the previous route in terms of duration and reaching the optimum, and this will reduce the cost of fuel and reduce traffic.