The journey from Siwan to Guwahati covers approximately 850 km. The most practical way is by train, crossing the scenic landscapes of North Bihar and West Bengal. The journey takes about 16 to 18 hours. You will cross the Brahmaputra River before reaching Guwahati.
Total Distance: 850 km by road, 700 km air distance.
Trains can be delayed due to weather in North Bengal.
November to April.