The calculated distance (air line) between Hamhŭng and Pukchil-lodongjagu is approximately 97 miles respectively 155 kilometers.
By car or train, the actual journey to Pukchil-lodongjagu is certainly longer, as only the direct route (as the crow flies) between Hamhŭng and Pukchil-lodongjagu has been calculated here.
Air line (approximately)
155 kilometers
84 nautical miles