The calculated distance (air line) between Sŭngam-nodongjagu and Rajin is approximately 51 miles respectively 83 kilometers.
By car or train, the actual journey to Rajin is certainly longer, as only the direct route (as the crow flies) between Sŭngam-nodongjagu and Rajin has been calculated here.
Air line (approximately)
83 kilometers
45 nautical miles