The calculated distance (air line) between Uherský Brod and Mladá Boleslav is approximately 156 miles respectively 250 kilometers.
By car or train, the actual journey to Mladá Boleslav is certainly longer, as only the direct route (as the crow flies) between Uherský Brod and Mladá Boleslav has been calculated here.
Air line (approximately)
250 kilometers
135 nautical miles