The calculated distance (air line) between Yŏnggwang-ŭp and Hongwŏn is approximately 27 miles respectively 43 kilometers.
By car or train, the actual journey to Hongwŏn is certainly longer, as only the direct route (as the crow flies) between Yŏnggwang-ŭp and Hongwŏn has been calculated here.
Air line (approximately)
43 kilometers
23 nautical miles