The journey from Mhasla to Guwahati covers 2500 km. You must reach Mumbai first, then take a direct train like the Guwahati Express or a flight. The train journey takes about 50 to 60 hours. Guwahati is the gateway to Northeast India. This route crosses the entire breadth of India.
Total Distance: 2500 km by road, 2000 km air distance.
Train travel is very long; flights are highly recommended.
October to March for pleasant weather.