To reach Haridwar from Sabroom, you must first travel to Agartala. From Agartala, you can take a train to Haridwar, usually involving a change in Delhi. The distance is over 2200 km. It is a long journey to the holy city.
Total Distance: 2250 km by road, 1800 km air distance.
Check for connecting trains at Delhi station.
October to March for pleasant weather in Haridwar.