The calculated distance (air line) between Kota Bharu and Sungai Petani is approximately 125 miles respectively 201 kilometers.
By car or train, the actual journey to Sungai Petani is certainly longer, as only the direct route (as the crow flies) between Kota Bharu and Sungai Petani has been calculated here.
Air line (approximately)
201 kilometers
109 nautical miles