The calculated distance (air line) between Hoeryŏng and Sŭngam-nodongjagu is approximately 53 miles respectively 86 kilometers.
By car or train, the actual journey to Sŭngam-nodongjagu is certainly longer, as only the direct route (as the crow flies) between Hoeryŏng and Sŭngam-nodongjagu has been calculated here.
Air line (approximately)
86 kilometers
46 nautical miles