The calculated distance (air line) between Frýdlant nad Ostravicí and Karviná is approximately 20 miles respectively 32 kilometers.
By car or train, the actual journey to Karviná is certainly longer, as only the direct route (as the crow flies) between Frýdlant nad Ostravicí and Karviná has been calculated here.
Air line (approximately)
32 kilometers
17 nautical miles