The calculated distance (air line) between An Nāşirīyah and Janzūr is approximately 15 miles respectively 25 kilometers.
By car or train, the actual journey to Janzūr is certainly longer, as only the direct route (as the crow flies) between An Nāşirīyah and Janzūr has been calculated here.
Air line (approximately)
25 kilometers
13 nautical miles