The calculated distance (air line) between Sri Jayewardenepura Kotte and Badulla is approximately 79 miles respectively 127 kilometers.
By car or train, the actual journey to Badulla is certainly longer, as only the direct route (as the crow flies) between Sri Jayewardenepura Kotte and Badulla has been calculated here.
Air line (approximately)
127 kilometers
69 nautical miles