The calculated distance (air line) between Klášterec nad Ohří and Mladá Boleslav is approximately 76 miles respectively 122 kilometers.
By car or train, the actual journey to Mladá Boleslav is certainly longer, as only the direct route (as the crow flies) between Klášterec nad Ohří and Mladá Boleslav has been calculated here.
Air line (approximately)
122 kilometers
66 nautical miles