The journey from Mahabalipuram to Dhanbad is a long-distance trip of about 1600 km. You must reach Chennai and take a direct train to Dhanbad Junction. This is a major route on the Grand Chord line. Driving is not recommended due to the extreme distance.
Total Distance: 1600 km by road, 1350 km air distance.
The Alleppey-Dhanbad Express is a direct train for this route.
October to March for pleasant weather.