The calculated distance (air line) between Sri Jayewardenepura Kotte and Nuwara Eliya is approximately 60 miles respectively 97 kilometers.
By car or train, the actual journey to Nuwara Eliya is certainly longer, as only the direct route (as the crow flies) between Sri Jayewardenepura Kotte and Nuwara Eliya has been calculated here.
Air line (approximately)
97 kilometers
52 nautical miles