The calculated distance (air line) between Nové Strašecí and Mladá Boleslav is approximately 48 miles respectively 77 kilometers.
By car or train, the actual journey to Mladá Boleslav is certainly longer, as only the direct route (as the crow flies) between Nové Strašecí and Mladá Boleslav has been calculated here.
Air line (approximately)
77 kilometers
41 nautical miles