The calculated distance (air line) between Hamhŭng and Yuktae-dong is approximately 34 miles respectively 54 kilometers.
By car or train, the actual journey to Yuktae-dong is certainly longer, as only the direct route (as the crow flies) between Hamhŭng and Yuktae-dong has been calculated here.
Air line (approximately)
54 kilometers
29 nautical miles