The calculated distance (air line) between An Nāşirīyah and Şurmān is approximately 20 miles respectively 31 kilometers.
By car or train, the actual journey to Şurmān is certainly longer, as only the direct route (as the crow flies) between An Nāşirīyah and Şurmān has been calculated here.
Air line (approximately)
31 kilometers
17 nautical miles