The calculated distance (air line) between Samho-rodongjagu and Sariwŏn is approximately 151 miles respectively 243 kilometers.
By car or train, the actual journey to Sariwŏn is certainly longer, as only the direct route (as the crow flies) between Samho-rodongjagu and Sariwŏn has been calculated here.
Air line (approximately)
243 kilometers
131 nautical miles