The calculated distance (air line) between Bagan Serai and Kota Bharu is approximately 140 miles respectively 225 kilometers.
By car or train, the actual journey to Kota Bharu is certainly longer, as only the direct route (as the crow flies) between Bagan Serai and Kota Bharu has been calculated here.
Air line (approximately)
225 kilometers
122 nautical miles