The calculated distance (air line) between Zhangjiakou and Liukuaizhuang is approximately 168 miles respectively 271 kilometers.
By car or train, the actual journey to Liukuaizhuang is certainly longer, as only the direct route (as the crow flies) between Zhangjiakou and Liukuaizhuang has been calculated here.
Air line (approximately)
271 kilometers
146 nautical miles