The calculated distance (air line) between České Budějovice and Ústí nad Labem is approximately 118 miles respectively 190 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 České Budějovice and Ústí nad Labem has been calculated here.
Air line (approximately)
190 kilometers
103 nautical miles