684.7 kilometers.

According to Baidu map data, the distance from Xi'an to Xiaogan is 684.7 kilometers. It takes 7 hours and 55 minutes to drive there by car. It passes through Fuyin Expressway. The fuel cost is about 479 yuan, and the toll on the expressway is about 350 yuan.

Xi'an's tourist attractions include Qin Shihuang's Terracotta Warriors and Horses Museum, Shaanxi History Museum, Angu City Wall, Big Wild Goose Pagoda and Small Wild Goose Pagoda.