The journey from Kelshi to Guwahati is a very long-distance transit. You must reach Mumbai, then take a train to Guwahati. The total distance is over 2800 km. This route takes you from the coast to the northeast of India.
Total Distance: 2800 km by road, 2200 km air distance.
The train journey is very long; ensure you have a confirmed berth.
October to April.