As to my previous thread about Chennai to Goa train, I would also like to know about a train from Chennai to Hyderabad. I would be heading to Hyderabad only to see Charminar and Golkonda. The main question is, that is it best to go Goa first or Hyderabad first from Chennai? How long does a Chennai to Hyderabad train journey take? What is a cost for a train from Chennai to Hyderabad? How many days should be spent at Hyderabad? Is it even worth going Hyderabad? Or do you think I should spend the time I would have done in Hyderabad some place else?