The calculated distance (air line) between Brandýs nad Labem-Stará Boleslav and Ostrava is approximately 163 miles respectively 262 kilometers.
By car or train, the actual journey to Ostrava is certainly longer, as only the direct route (as the crow flies) between Brandýs nad Labem-Stará Boleslav and Ostrava has been calculated here.
Air line (approximately)
262 kilometers
141 nautical miles