The calculated distance (air line) between Ústí nad Orlicí and Znojmo is approximately 79 miles respectively 127 kilometers.
By car or train, the actual journey to Znojmo is certainly longer, as only the direct route (as the crow flies) between Ústí nad Orlicí and Znojmo has been calculated here.
Air line (approximately)
127 kilometers
68 nautical miles