The calculated distance (air line) between Ch’ŏngdan-ŭp and Kangnyŏng is approximately 24 miles respectively 38 kilometers.
By car or train, the actual journey to Kangnyŏng is certainly longer, as only the direct route (as the crow flies) between Ch’ŏngdan-ŭp and Kangnyŏng has been calculated here.
Air line (approximately)
38 kilometers
21 nautical miles