The calculated distance (air line) between Selayang Baru Utara and Semenyih is approximately 24 miles respectively 39 kilometers.
By car or train, the actual journey to Semenyih is certainly longer, as only the direct route (as the crow flies) between Selayang Baru Utara and Semenyih has been calculated here.
Air line (approximately)
39 kilometers
21 nautical miles