The calculated distance (air line) between Rychnov nad Kněžnou and Česká Lípa is approximately 85 miles respectively 136 kilometers.
By car or train, the actual journey to Česká Lípa is certainly longer, as only the direct route (as the crow flies) between Rychnov nad Kněžnou and Česká Lípa has been calculated here.
Air line (approximately)
136 kilometers
73 nautical miles