The journey from Gangtok to the holy city of Haridwar is a long-distance trip. You must first travel to NJP by road. From NJP, you can take a direct train to Haridwar Junction. Alternatively, fly from Bagdogra to Dehradun and take a train or taxi to Haridwar.
Total Distance: 1300 km by road, 1000 km air distance.
Direct trains are available.
Dehradun is the nearest major airport.
October to March for pleasant weather.