The calculated distance (air line) between Horana South and Sri Jayewardenepura Kotte is approximately 16 miles respectively 25 kilometers.
By car or train, the actual journey to Sri Jayewardenepura Kotte is certainly longer, as only the direct route (as the crow flies) between Horana South and Sri Jayewardenepura Kotte has been calculated here.
Air line (approximately)
25 kilometers
14 nautical miles