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