The journey from Chennur to Guwahati is a massive 2100 km trek across India. You must reach Mancherial station to board a train heading towards the Northeast. This route crosses the entire eastern corridor of India. It is a long journey, often taking over 40 hours. Ensure you have a confirmed ticket and plenty of supplies for the trip.
Total Distance: Driving distance is 2100 km; straight-line air distance is 1600 km.
This is a very long journey; consider breaking it in Kolkata if needed.
November to February, as the weather is cool and pleasant.