The journey from Triveniganj to Kochi covers about 2600 km. You will need to reach Barauni or Patna to board a train to Kochi (Ernakulam). The journey takes approximately 50 to 60 hours. Kochi is a major port city in Kerala.
Total Distance: 2600 km driving distance, 2200 km straight-line air distance.
This is a very long journey; prepare accordingly.
October to March for pleasant weather.