The calculated distance (air line) between Yŏngbyŏn and P’yŏngsŏng is approximately 39 miles respectively 63 kilometers.
By car or train, the actual journey to P’yŏngsŏng is certainly longer, as only the direct route (as the crow flies) between Yŏngbyŏn and P’yŏngsŏng has been calculated here.
Air line (approximately)
63 kilometers
34 nautical miles