The calculated distance (air line) between Kataragama and Sri Jayewardenepura Kotte is approximately 103 miles respectively 166 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 Kataragama and Sri Jayewardenepura Kotte has been calculated here.
Air line (approximately)
166 kilometers
90 nautical miles