The calculated distance (air line) between Nāḩiyat al Fuhūd and Al Ḩillah is approximately 170 miles respectively 274 kilometers.
By car or train, the actual journey to Al Ḩillah is certainly longer, as only the direct route (as the crow flies) between Nāḩiyat al Fuhūd and Al Ḩillah has been calculated here.
Air line (approximately)
274 kilometers
148 nautical miles