The calculated distance (air line) between Bystřice nad Pernštejnem and Děčín is approximately 126 miles respectively 202 kilometers.
By car or train, the actual journey to Děčín is certainly longer, as only the direct route (as the crow flies) between Bystřice nad Pernštejnem and Děčín has been calculated here.
Air line (approximately)
202 kilometers
109 nautical miles