The calculated distance (air line) between An Nāşirīyah and Şabrātah is approximately 25 miles respectively 40 kilometers.
By car or train, the actual journey to Şabrātah is certainly longer, as only the direct route (as the crow flies) between An Nāşirīyah and Şabrātah has been calculated here.
Air line (approximately)
40 kilometers
22 nautical miles