The calculated distance (air line) between Az Zubayr and Janūb as Surrah is approximately 79 miles respectively 128 kilometers.
By car or train, the actual journey to Janūb as Surrah is certainly longer, as only the direct route (as the crow flies) between Az Zubayr and Janūb as Surrah has been calculated here.
Air line (approximately)
128 kilometers
69 nautical miles