The calculated distance (air line) between Sŭngho 1-tong and Kowŏn-ŭp is approximately 74 miles respectively 120 kilometers.
By car or train, the actual journey to Kowŏn-ŭp is certainly longer, as only the direct route (as the crow flies) between Sŭngho 1-tong and Kowŏn-ŭp has been calculated here.
Air line (approximately)
120 kilometers
65 nautical miles