The calculated distance (air line) between Kota Bharu and Alor Setar is approximately 129 miles respectively 208 kilometers.
By car or train, the actual journey to Alor Setar is certainly longer, as only the direct route (as the crow flies) between Kota Bharu and Alor Setar has been calculated here.
Air line (approximately)
208 kilometers
112 nautical miles