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