The calculated distance (air line) between Hafar Al-Batin and Al Khafjī is approximately 153 miles respectively 246 kilometers.
By car or train, the actual journey to Al Khafjī is certainly longer, as only the direct route (as the crow flies) between Hafar Al-Batin and Al Khafjī has been calculated here.
Air line (approximately)
246 kilometers
133 nautical miles