The calculated distance (air line) between Uijeongbu-si and Ganghwa-gun is approximately 31 miles respectively 49 kilometers.
By car or train, the actual journey to Ganghwa-gun is certainly longer, as only the direct route (as the crow flies) between Uijeongbu-si and Ganghwa-gun has been calculated here.
Air line (approximately)
49 kilometers
27 nautical miles