In morning, check out Guwahati and board a train to New Jalpaiguri (408 km/6 hr). Drive from New Jalpaiguri to Gangtok (117 km/2.5 hr), the capital of Sikkim. After checking in the hotel and some time for leisure, continue Gangtok city tour with local sightseeing. Overnight halt at Gangtok.
Day 4 with a visit to the National Tourism Award winner in 2010-2011, Siddeshwar Dham. This is a conglomeration of temples replicated on famous Char Dhams and twelve Jyotirlingas. Visit Samdruptse or the wish fulfilling hill where 135 ft tall statue of Guru Padmasambhava is installed. Continue drive to Rabong (75 Km/3 hrs.) Overnight in Rabong.