The calculated distance (air line) between Taiping and Bukit Mertajam is approximately 40 miles respectively 64 kilometers.
By car or train, the actual journey to Bukit Mertajam is certainly longer, as only the direct route (as the crow flies) between Taiping and Bukit Mertajam has been calculated here.
Air line (approximately)
64 kilometers
35 nautical miles