The calculated distance (air line) between Dehiwala-Mount Lavinia and Beruwala is approximately 26 miles respectively 42 kilometers.
By car or train, the actual journey to Beruwala is certainly longer, as only the direct route (as the crow flies) between Dehiwala-Mount Lavinia and Beruwala has been calculated here.
Air line (approximately)
42 kilometers
23 nautical miles