The calculated distance (air line) between Poděbrady and Mladá Boleslav is approximately 21 miles respectively 34 kilometers.
By car or train, the actual journey to Mladá Boleslav is certainly longer, as only the direct route (as the crow flies) between Poděbrady and Mladá Boleslav has been calculated here.
Air line (approximately)
34 kilometers
18 nautical miles