The journey from Bardar to Patna covers 1200 km. You will travel across the Indo-Gangetic plains. The most practical route is by train via Delhi or Lucknow. Patna is a historic city on the banks of the Ganges. Expect a travel time of 20 hours.
Total Distance: 1200 km driving distance, 1000 km air distance.
The Sampoorna Kranti Express is a fast option.
October to March for pleasant weather.