The calculated distance (air line) between Dresden and Třebechovice pod Orebem is approximately 115 miles respectively 185 kilometers.
By car or train, the actual journey to Třebechovice pod Orebem is certainly longer, as only the direct route (as the crow flies) between Dresden and Třebechovice pod Orebem has been calculated here.
Air line (approximately)
185 kilometers
100 nautical miles