<P> Vivek Express is a chain of express trains on the Indian Railways network . These trains were announced in the Railway Budget of 2011 - 12 by the then Railway Minister . These trains were started to commemorate the 150th birth anniversary of Swami Vivekananda, to be held in 2013 . One of the Vivek Express trains, the one from Dibrugarh to Kanyakumari; is the longest route on the Indian Railways network, in terms of distance and time, and is the 9th longest in the world . </P> <P> As of July 2013, there are 4 pairs of Vivek Express trains </P>

Which is the longest running train in india