The calculated distance (air line) between Nahiyat Ghammas and An Nu‘mānīyah is approximately 73 miles respectively 117 kilometers.
By car or train, the actual journey to An Nu‘mānīyah is certainly longer, as only the direct route (as the crow flies) between Nahiyat Ghammas and An Nu‘mānīyah has been calculated here.
Air line (approximately)
117 kilometers
63 nautical miles