The calculated distance (air line) between Al Başrah al Qadīmah and Az Zawr is approximately 78 miles respectively 126 kilometers.
By car or train, the actual journey to Az Zawr is certainly longer, as only the direct route (as the crow flies) between Al Başrah al Qadīmah and Az Zawr has been calculated here.
Air line (approximately)
126 kilometers
68 nautical miles