The calculated distance (air line) between Sŭngho 1-tong and Anak is approximately 42 miles respectively 68 kilometers.
By car or train, the actual journey to Anak is certainly longer, as only the direct route (as the crow flies) between Sŭngho 1-tong and Anak has been calculated here.
Air line (approximately)
68 kilometers
37 nautical miles