Patna, one of the oldest continuously inhabited places in the world, is a long journey from Payyoli. You will need to travel to Kozhikode and take a long-distance train. The journey takes you across the length of India, passing through major cities. Patna is a gateway to Buddhist pilgrimage sites.
Total Distance: 2500 km by road, 2000 km air distance.
Check for long-distance trains on the IRCTC website.
October to March for pleasant weather.