The calculated distance (air line) between Ústí nad Orlicí and Prostějov is approximately 47 miles respectively 76 kilometers.
By car or train, the actual journey to Prostějov is certainly longer, as only the direct route (as the crow flies) between Ústí nad Orlicí and Prostějov has been calculated here.
Air line (approximately)
76 kilometers
41 nautical miles