The calculated distance (air line) between Zhangjiajie and Lengshuijiang is approximately 115 miles respectively 185 kilometers.
By car or train, the actual journey to Lengshuijiang is certainly longer, as only the direct route (as the crow flies) between Zhangjiajie and Lengshuijiang has been calculated here.
Air line (approximately)
185 kilometers
100 nautical miles