176.9 km. According to Baidu map, it takes 3 hours and 59 minutes to drive from Mianyang to Pingwu. Total distance 176.9 km, passing through Liaoning Avenue and G247. Liaoning Avenue, also known as Mianan North Expressway, is a main road in Mianyang City, Sichuan Province, which was aided by Liaoning Province. It starts from Jiuzhou Gymnasium, Yongxing Town, Fucheng District in the east, reaches Anchang Town, Beichuan Qiang Autonomous County in the northwest, and passes through Fucheng District, Anzhou District and Beichuan Qiang Autonomous County, with a total length of 28 kilometers.