The calculated distance (air line) between Pyongyang and Panghyŏn-dong is approximately 65 miles respectively 105 kilometers.
By car or train, the actual journey to Panghyŏn-dong is certainly longer, as only the direct route (as the crow flies) between Pyongyang and Panghyŏn-dong has been calculated here.
Air line (approximately)
105 kilometers
56 nautical miles