The calculated distance (air line) between Vrbno pod Pradědem and Třinec is approximately 65 miles respectively 105 kilometers.
By car or train, the actual journey to Třinec is certainly longer, as only the direct route (as the crow flies) between Vrbno pod Pradědem and Třinec has been calculated here.
Air line (approximately)
105 kilometers
56 nautical miles