The calculated distance (air line) between Ḩawallī and Nāḩiyat al Fuhūd is approximately 137 miles respectively 221 kilometers.
By car or train, the actual journey to Nāḩiyat al Fuhūd is certainly longer, as only the direct route (as the crow flies) between Ḩawallī and Nāḩiyat al Fuhūd has been calculated here.
Air line (approximately)
221 kilometers
119 nautical miles