The railway connecting Chengdu Railway Station and Chongqing North Railway Station is about 338 kilometers long. By train, it takes about 4 to 6 hours to get to the destination. If you want to save more time, you may take the T trains. By T trains, it only takes you less than 4 hours. The T trains include T8808, T8884, T8900 and T8816. Additionally, the long-distance bus station in Chengdu provides the buses to Chongqing.