The calculated distance (air line) between Kuala Lumpur and Simpang Empat is approximately 145 miles respectively 233 kilometers.
By car or train, the actual journey to Simpang Empat is certainly longer, as only the direct route (as the crow flies) between Kuala Lumpur and Simpang Empat has been calculated here.
Air line (approximately)
233 kilometers
126 nautical miles