The calculated distance (air line) between Yuktae-dong and Kyŏngsŏng is approximately 132 miles respectively 212 kilometers.
By car or train, the actual journey to Kyŏngsŏng is certainly longer, as only the direct route (as the crow flies) between Yuktae-dong and Kyŏngsŏng has been calculated here.
Air line (approximately)
212 kilometers
115 nautical miles