The journey from Serampore to Prayagraj is about 800 km. You can take a train from Howrah Junction to Prayagraj Junction. The journey takes about 12-14 hours. Prayagraj is famous for the confluence of the Ganges, Yamuna, and Saraswati rivers.
Total Distance: 800 km by road, 700 km air distance.
Book in advance as this is a popular route.
October to March for pleasant weather.