The calculated distance (air line) between Nāḩiyat al Fuhūd and Bayān is approximately 140 miles respectively 225 kilometers.
By car or train, the actual journey to Bayān is certainly longer, as only the direct route (as the crow flies) between Nāḩiyat al Fuhūd and Bayān has been calculated here.
Air line (approximately)
225 kilometers
121 nautical miles