The calculated distance (air line) between Al Başrah al Qadīmah and Bayān is approximately 84 miles respectively 135 kilometers.
By car or train, the actual journey to Bayān is certainly longer, as only the direct route (as the crow flies) between Al Başrah al Qadīmah and Bayān has been calculated here.
Air line (approximately)
135 kilometers
73 nautical miles