The calculated distance (air line) between Veselí nad Lužnicí and Karviná is approximately 179 miles respectively 287 kilometers.
By car or train, the actual journey to Karviná is certainly longer, as only the direct route (as the crow flies) between Veselí nad Lužnicí and Karviná has been calculated here.
Air line (approximately)
287 kilometers
155 nautical miles