The calculated distance (air line) between Dingcheng and Huaiyuan Chengguanzhen is approximately 137 miles respectively 220 kilometers.
By car or train, the actual journey to Huaiyuan Chengguanzhen is certainly longer, as only the direct route (as the crow flies) between Dingcheng and Huaiyuan Chengguanzhen has been calculated here.
Air line (approximately)
220 kilometers
119 nautical miles