The calculated distance (air line) between Karviná and Frýdek-Místek is approximately 15 miles respectively 23 kilometers.
By car or train, the actual journey to Frýdek-Místek is certainly longer, as only the direct route (as the crow flies) between Karviná and Frýdek-Místek has been calculated here.
Air line (approximately)
23 kilometers
13 nautical miles