The calculated distance (air line) between T’ongch’ŏn-ŭp and Hamhŭng is approximately 69 miles respectively 112 kilometers.
By car or train, the actual journey to Hamhŭng is certainly longer, as only the direct route (as the crow flies) between T’ongch’ŏn-ŭp and Hamhŭng has been calculated here.
Air line (approximately)
112 kilometers
60 nautical miles