The calculated distance (air line) between Manalūrpettai and Kallakurichi is approximately 21 miles respectively 34 kilometers.
By car or train, the actual journey to Kallakurichi is certainly longer, as only the direct route (as the crow flies) between Manalūrpettai and Kallakurichi has been calculated here.
Air line (approximately)
34 kilometers
18 nautical miles