Kiul is connected to metropolitan areas of India, by the Howrah–Delhi main line via Mugalsarai–Patna route which runs along the historic Grand Trunk Road.This is the place where Mahavira, Tirthankara of Jainism, achieved Kevala Jnana.Kiul junction is a busy station in East Bihar and entry station of East Central Railway and Eastern Railway.There are five routes in the Station: Gaya, Barauni, Bhagalpur, Howrah and Patna.The platforms are interconnected with foot overbridge (FOB)towards JMP and Subway .