The calculated distance (air line) between Kowŏn-ŭp and Panghyŏn-dong is approximately 111 miles respectively 178 kilometers.
By car or train, the actual journey to Panghyŏn-dong is certainly longer, as only the direct route (as the crow flies) between Kowŏn-ŭp and Panghyŏn-dong has been calculated here.
Air line (approximately)
178 kilometers
96 nautical miles