The journey from Kochi to Patna spans over 2300 km, connecting the southern coast to the capital of Bihar. Flights are the most practical, taking about 5 hours with a layover. The train journey is a 45+ hour trip. Patna is famous for its history, the Ganges, and proximity to Bodh Gaya.
Total Distance: 2300 km driving distance; 1900 km straight-line air distance.
This is a very long journey; prepare accordingly.
Most flights have a layover in Delhi or Kolkata.
October to March for pleasant weather.