The calculated distance (air line) between Sri Jayewardenepura Kotte and Ampara is approximately 125 miles respectively 201 kilometers.
By car or train, the actual journey to Ampara is certainly longer, as only the direct route (as the crow flies) between Sri Jayewardenepura Kotte and Ampara has been calculated here.
Air line (approximately)
201 kilometers
109 nautical miles