The calculated distance (air line) between Náměšť nad Oslavou and Karviná is approximately 116 miles respectively 186 kilometers.
By car or train, the actual journey to Karviná is certainly longer, as only the direct route (as the crow flies) between Náměšť nad Oslavou and Karviná has been calculated here.
Air line (approximately)
186 kilometers
101 nautical miles