The calculated distance (air line) between Panghyŏn-dong and Sariwŏn is approximately 99 miles respectively 160 kilometers.
By car or train, the actual journey to Sariwŏn is certainly longer, as only the direct route (as the crow flies) between Panghyŏn-dong and Sariwŏn has been calculated here.
Air line (approximately)
160 kilometers
86 nautical miles