The journey from Baihata Chariali to Gangtok is best done by train to Siliguri and then a taxi to Gangtok. It is a scenic drive through the hills. Gangtok is the capital of Sikkim. Expect a travel time of 12-15 hours by train and taxi.
Total Distance: 500 km by road, 400 km air distance.
Train to Siliguri is convenient.
October to March.