The calculated distance (air line) between Panghyŏn-dong and Manp’o is approximately 103 miles respectively 166 kilometers.
By car or train, the actual journey to Manp’o is certainly longer, as only the direct route (as the crow flies) between Panghyŏn-dong and Manp’o has been calculated here.
Air line (approximately)
166 kilometers
90 nautical miles