The calculated distance (air line) between Hwangju-ŭp and Chaeryŏng-ŭp is approximately 21 miles respectively 33 kilometers.
By car or train, the actual journey to Chaeryŏng-ŭp is certainly longer, as only the direct route (as the crow flies) between Hwangju-ŭp and Chaeryŏng-ŭp has been calculated here.
Air line (approximately)
33 kilometers
18 nautical miles