The calculated distance (air line) between Subang Jaya and Kuala Selangor is approximately 31 miles respectively 50 kilometers.
By car or train, the actual journey to Kuala Selangor is certainly longer, as only the direct route (as the crow flies) between Subang Jaya and Kuala Selangor has been calculated here.
Air line (approximately)
50 kilometers
27 nautical miles