It is 687.9 kilometers from Guangshan to Xi 'an. According to the Baidu map, from the starting point, go south to Ping 'an Road, drive 30 meters, turn left, enter Ping 'an Road, drive 180 meters, turn left, enter Zishui Street, drive 1.2 kilometers; Go straight, enter the Third Ring Road, drive 550 meters, go straight, enter Zishui Street, drive 2.0 kilometers, go straight, enter G230, drive 3. 1 km, turn left, drive 900 meters from G230 to Shanghai-Shaanxi Expressway, go straight, enter Shanghai-Shaanxi Expressway, drive 658.6 kilometers, right ahead, enter Tianwanglijiao, drive 970 meters. Go straight, enter Lvxiaozhai Interchange, drive 2. 1 km, go straight, enter Yan Xi Expressway, drive 90 meters, go straight, enter Weiyang Road, drive 1.7 km, go straight, enter Zhangjiabao roundabout, drive 220 meters, enter roundabout, enter Fengcheng No.8 Road, and drive 520 meters to the finish line. The whole journey is about 687.9 kilometers, which takes 7 hours and 43 minutes.