The calculated distance (air line) between Pukchil-lodongjagu and Namp’o is approximately 103 miles respectively 165 kilometers.
By car or train, the actual journey to Namp’o is certainly longer, as only the direct route (as the crow flies) between Pukchil-lodongjagu and Namp’o has been calculated here.
Air line (approximately)
165 kilometers
89 nautical miles