The calculated distance (air line) between Imam Qasim and An Nu‘mānīyah is approximately 46 miles respectively 74 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 Imam Qasim and An Nu‘mānīyah has been calculated here.
Air line (approximately)
74 kilometers
40 nautical miles