The calculated distance (air line) between T’ongch’ŏn-ŭp and Hyesan-dong is approximately 169 miles respectively 273 kilometers.
By car or train, the actual journey to Hyesan-dong is certainly longer, as only the direct route (as the crow flies) between T’ongch’ŏn-ŭp and Hyesan-dong has been calculated here.
Air line (approximately)
273 kilometers
147 nautical miles