Indian Railways operates a train from Patna to Munger every 4 hours. Tickets cost $3 - $16 and the journey takes 3 h 21 min.
How to get from Patna to Munger
From Patna Junction (PNBE) train to Mokameh Junction (MKA) then taxi to Munger. 2 h 45 min ₹2,076. From Patna Junction (PNBE) train to Jamalpur Junction (JMP) then taxi to Munger. 3 h 28 min ₹1,016. From Patna taxi to Munger. 2 h 31 min ₹2,783. From Patna drive to Munger. 2 h 31 min ₹1,389.