The calculated distance (air line) between Nasiriyah and Ad Dīwānīyah is approximately 102 miles respectively 164 kilometers.
By car or train, the actual journey to Ad Dīwānīyah is certainly longer, as only the direct route (as the crow flies) between Nasiriyah and Ad Dīwānīyah has been calculated here.
Air line (approximately)
164 kilometers
88 nautical miles