The calculated distance (air line) between Munsan and Uijeongbu-si is approximately 16 miles respectively 27 kilometers.
By car or train, the actual journey to Uijeongbu-si is certainly longer, as only the direct route (as the crow flies) between Munsan and Uijeongbu-si has been calculated here.
Air line (approximately)
27 kilometers
14 nautical miles