The calculated distance (air line) between T’ongch’ŏn-ŭp and Hwangju-ŭp is approximately 116 miles respectively 186 kilometers.
By car or train, the actual journey to Hwangju-ŭp is certainly longer, as only the direct route (as the crow flies) between T’ongch’ŏn-ŭp and Hwangju-ŭp has been calculated here.
Air line (approximately)
186 kilometers
100 nautical miles