The journey from Mahabalipuram to Darbhanga is a long-distance trip of about 2000 km. You must reach Chennai and take a direct train to Darbhanga. This is a major route on the East Central Railway line. Driving is not recommended due to the extreme distance.
Total Distance: 2000 km by road, 1700 km air distance.
The Bagmati Express is a direct train for this route.
October to March for pleasant weather.