The journey from Theni to Guwahati is a massive 2800 km trek across the length of India. The most practical way is to fly from Madurai to Guwahati with a layover in a major hub like Chennai or Kolkata. By train, the journey takes over 48 hours and requires multiple changes. This route connects the southern tip of India to the gateway of the Northeast.
Total Distance: 2800 km by road, 2200 km air distance.
This is a very long journey; ensure you have enough supplies.
Book well in advance to secure reasonable fares.
October to April for pleasant weather.