The calculated distance (air line) between Dvůr Králové nad Labem and Opava is approximately 98 miles respectively 158 kilometers.
By car or train, the actual journey to Opava is certainly longer, as only the direct route (as the crow flies) between Dvůr Králové nad Labem and Opava has been calculated here.
Air line (approximately)
158 kilometers
86 nautical miles