Sir , the Sealdah - New Delhi Duronto Exp was branded as the Fastest Long Distance train of India , in terms of total journey time when introduced , as it only takes around 16.5 Hrs between Calcutta and New Delhi via Dhanbad - Mughalsarai (skipping Gaya Jn) . May be , Bombay - New Delhi Duronto Exp can beat it's record when it will be introduced . As per my estimate , it will only stop at "technical" halts of Baroda Jn , Ratlam Jn and Kota Jn enroute . Thanks .