The calculated distance (air line) between Batu Feringgi and Alor Setar is approximately 46 miles respectively 73 kilometers.
By car or train, the actual journey to Alor Setar is certainly longer, as only the direct route (as the crow flies) between Batu Feringgi and Alor Setar has been calculated here.
Air line (approximately)
73 kilometers
40 nautical miles