The calculated distance (air line) between Hutan Melintang and Alor Setar is approximately 160 miles respectively 258 kilometers.
By car or train, the actual journey to Alor Setar is certainly longer, as only the direct route (as the crow flies) between Hutan Melintang and Alor Setar has been calculated here.
Air line (approximately)
258 kilometers
139 nautical miles