The calculated distance (air line) between Hamhŭng and Yŏnggwang-ŭp is approximately 8 miles respectively 13 kilometers.
By car or train, the actual journey to Yŏnggwang-ŭp is certainly longer, as only the direct route (as the crow flies) between Hamhŭng and Yŏnggwang-ŭp has been calculated here.
Air line (approximately)
13 kilometers
7 nautical miles