About 233.8 kilometers. According to Baidu map query, the journey from Changdu City to Dingqing County is about 233.8 kilometers, and it is estimated that it will take 5 hours to pass through Chengna Line. You can also drive through the Xijing line to the whole journey of about 234.4438+0 km, which is estimated to take 5 hours 10 minute.