Pondichery is a Union Territory in Tamil Nadu district & an eastern coastal area. It was the French Capital in India till independence, so the roads and buildings in the main town still gives you the feel of a french colony. The place is very hot & sunny. Food is the best thing in Pndichery, you get a variety of good european dishes. There are beaches, good hotels & guest houses nearby to stay.
We went via Vellore taking NH46 which is about 350km and returned via NH66 which was 298km. But the NH66 was in very bad condition so recommending the first route. It took about 6Hrs each way. Here are some photos.