The calculated distance (air line) between Bechyně and Mladá Boleslav is approximately 80 miles respectively 128 kilometers.
By car or train, the actual journey to Mladá Boleslav is certainly longer, as only the direct route (as the crow flies) between Bechyně and Mladá Boleslav has been calculated here.
Air line (approximately)
128 kilometers
69 nautical miles