The calculated distance (air line) between Songgangdong and Uijeongbu-si is approximately 92 miles respectively 148 kilometers.
By car or train, the actual journey to Uijeongbu-si is certainly longer, as only the direct route (as the crow flies) between Songgangdong and Uijeongbu-si has been calculated here.
Air line (approximately)
148 kilometers
80 nautical miles