Khammam is a major town in Telangana, 650 km from Tirukazhukundram. You should travel to Chennai Central to catch a direct train to Khammam. The journey takes about 12 hours. It is a key transit point for the region.
Total Distance: 650 km by rail, 580 km straight-line.
Check the train schedule on the IRCTC website before planning.
October to March.