The calculated distance (air line) between Šternberk and Ústí nad Labem is approximately 158 miles respectively 254 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 Šternberk and Ústí nad Labem has been calculated here.
Air line (approximately)
254 kilometers
137 nautical miles