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