The calculated distance (air line) between Panghyŏn-dong and Namp’o is approximately 80 miles respectively 129 kilometers.
By car or train, the actual journey to Namp’o is certainly longer, as only the direct route (as the crow flies) between Panghyŏn-dong and Namp’o has been calculated here.
Air line (approximately)
129 kilometers
69 nautical miles