The calculated distance (air line) between Samho-rodongjagu and Hamhŭng is approximately 18 miles respectively 29 kilometers.
By car or train, the actual journey to Hamhŭng is certainly longer, as only the direct route (as the crow flies) between Samho-rodongjagu and Hamhŭng has been calculated here.
Air line (approximately)
29 kilometers
16 nautical miles