The calculated distance (air line) between Thiruvidaimaruthur and Kallakurichi is approximately 61 miles respectively 98 kilometers.
By car or train, the actual journey to Kallakurichi is certainly longer, as only the direct route (as the crow flies) between Thiruvidaimaruthur and Kallakurichi has been calculated here.
Air line (approximately)
98 kilometers
53 nautical miles