The calculated distance (air line) between Uijeongbu-si and Mungyeong is approximately 102 miles respectively 163 kilometers.
By car or train, the actual journey to Mungyeong is certainly longer, as only the direct route (as the crow flies) between Uijeongbu-si and Mungyeong has been calculated here.
Air line (approximately)
163 kilometers
88 nautical miles