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