The calculated distance (air line) between Nahiyat Ghammas and Nāḩiyat al Fuhūd is approximately 135 miles respectively 217 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 Nahiyat Ghammas and Nāḩiyat al Fuhūd has been calculated here.
Air line (approximately)
217 kilometers
117 nautical miles