The calculated distance (air line) between Kralupy nad Vltavou and Ústí nad Labem is approximately 31 miles respectively 51 kilometers.
By car or train, the actual journey to Ústí nad Labem is certainly longer, as only the direct route (as the crow flies) between Kralupy nad Vltavou and Ústí nad Labem has been calculated here.
Air line (approximately)
51 kilometers
27 nautical miles