The journey from Mahabalipuram to Bhagalpur is a long-distance trip of about 1900 km. You must reach Chennai and take a direct train to Bhagalpur. This is a major route on the Eastern Railway line. Driving is not recommended due to the extreme distance.
Total Distance: 1900 km by road, 1600 km air distance.
The Anga Express is a direct train for this route.
October to March for pleasant weather.