The calculated distance (air line) between Letohrad and Frýdek-Místek is approximately 86 miles respectively 138 kilometers.
By car or train, the actual journey to Frýdek-Místek is certainly longer, as only the direct route (as the crow flies) between Letohrad and Frýdek-Místek has been calculated here.
Air line (approximately)
138 kilometers
75 nautical miles