The calculated distance (air line) between Yŏnggwang-ŭp and Hyesan-dong is approximately 103 miles respectively 165 kilometers.
By car or train, the actual journey to Hyesan-dong is certainly longer, as only the direct route (as the crow flies) between Yŏnggwang-ŭp and Hyesan-dong has been calculated here.
Air line (approximately)
165 kilometers
89 nautical miles