The calculated distance (air line) between Permatang Kuching and Kuala Lumpur is approximately 184 miles respectively 296 kilometers.
By car or train, the actual journey to Kuala Lumpur is certainly longer, as only the direct route (as the crow flies) between Permatang Kuching and Kuala Lumpur has been calculated here.
Air line (approximately)
296 kilometers
160 nautical miles