Patna, the capital of Bihar, is reachable from Aluva via train or flight. The distance is approximately 2500 km. Several long-distance trains connect Aluva to Patna Junction. Alternatively, you can fly from Kochi to Patna with a layover. This route connects the southern coast to the historic heart of North India.
Total Distance: 2500 km by road, 2000 km by air.
Check the train schedule on the IRCTC website.
October to March for pleasant weather.