The calculated distance (air line) between Yŏnggwang-ŭp and Hwangju-ŭp is approximately 129 miles respectively 208 kilometers.
By car or train, the actual journey to Hwangju-ŭp is certainly longer, as only the direct route (as the crow flies) between Yŏnggwang-ŭp and Hwangju-ŭp has been calculated here.
Air line (approximately)
208 kilometers
112 nautical miles