The calculated distance (air line) between Mladá Boleslav and Česká Lípa is approximately 25 miles respectively 40 kilometers.
By car or train, the actual journey to Česká Lípa is certainly longer, as only the direct route (as the crow flies) between Mladá Boleslav and Česká Lípa has been calculated here.
Air line (approximately)
40 kilometers
22 nautical miles