The calculated distance (air line) between Kuala Kangsar and Bukit Mertajam is approximately 52 miles respectively 84 kilometers.
By car or train, the actual journey to Bukit Mertajam is certainly longer, as only the direct route (as the crow flies) between Kuala Kangsar and Bukit Mertajam has been calculated here.
Air line (approximately)
84 kilometers
45 nautical miles