The calculated distance (air line) between Nāḩiyat al Fuhūd and Nahiyat Ghammas is approximately 135 miles respectively 217 kilometers.
By car or train, the actual journey to Nahiyat Ghammas is certainly longer, as only the direct route (as the crow flies) between Nāḩiyat al Fuhūd and Nahiyat Ghammas has been calculated here.
Air line (approximately)
217 kilometers
117 nautical miles