The calculated distance (air line) between Wenxian Chengguanzhen and Chengdu is approximately 162 miles respectively 260 kilometers.
By car or train, the actual journey to Chengdu is certainly longer, as only the direct route (as the crow flies) between Wenxian Chengguanzhen and Chengdu has been calculated here.
Air line (approximately)
260 kilometers
140 nautical miles