The calculated distance (air line) between Starý Bohumín and České Budějovice is approximately 185 miles respectively 298 kilometers.
By car or train, the actual journey to České Budějovice is certainly longer, as only the direct route (as the crow flies) between Starý Bohumín and České Budějovice has been calculated here.
Air line (approximately)
298 kilometers
161 nautical miles