17.8km. According to Baidu map, Northwestern Polytechnical University is located in beilin district, Xi City, Shaanxi Province. The distance from Northwestern Polytechnical University to Xi 'an is 17.8km, and it takes 3 1 minute to drive, passing through the West Second Ring Road and the west section of the Second Ring Road. Xi 'an is located in Guanzhong Basin in the hinterland of China, in the middle of the Yellow River Basin. It is one of the birthplaces of Chinese nation and oriental civilization, bordering Weinan City and Shangluo City, and bordering Zero River and Qiyuan Mountain in the east.