The calculated distance (air line) between Wabu and Yangp'yŏng is approximately 16 miles respectively 26 kilometers.
By car or train, the actual journey to Yangp'yŏng is certainly longer, as only the direct route (as the crow flies) between Wabu and Yangp'yŏng has been calculated here.
Air line (approximately)
26 kilometers
14 nautical miles