Gaya is well connected with Patna, Jehanabad, Biharsharif, Rajgir, Islampur, Nawada, Dehri on sone through daily passenger and express train services.

Gaya Junction's location on the Delhi–Kolkata Grand chord route, makes it served by numerous express and superfast trains from all over the country.

It is a junction and is connected to all the major cities such as New Delhi, Kolkata, Mumbai and Chennai through important broad-gauge routes (direct trains).

There is a direct train There are direct trains from Gaya to important stations in India like Delhi, Kolkata, Dhanbad, Chennai, Kamakhya–Guwahati, Ranchi, Patna ,Parasnath(Shikharji), Bokaro, Varanasi, Lucknow, Kota, Kanpur, Allahabad, Agra, Bareilly, Mathura, Jabalpur, Bhopal, Indore, Nagpur, Mumbai, Pune, Puri, Ahmedabad, Jodhpur, Amritsar, Dehradun, Kalka, Jammu, Gwalior, Dehradun, Ranchi, Jamshedpur (Tatanagar), Bhuvaneshwar, etc.

[6][7] Gaya Patna daily bond passenger train also plays a very essential role in the development of Bihar.