The calculated distance (air line) between Bagan Serai and Kuala Lumpur is approximately 151 miles respectively 244 kilometers.
By car or train, the actual journey to Kuala Lumpur is certainly longer, as only the direct route (as the crow flies) between Bagan Serai and Kuala Lumpur has been calculated here.
Air line (approximately)
244 kilometers
131 nautical miles