The calculated distance (air line) between Samho-rodongjagu and Sinŭiju is approximately 184 miles respectively 296 kilometers.
By car or train, the actual journey to Sinŭiju is certainly longer, as only the direct route (as the crow flies) between Samho-rodongjagu and Sinŭiju has been calculated here.
Air line (approximately)
296 kilometers
160 nautical miles