Viveka Expressnumbered 15906 is the longest running train in India, and 8th longest in the world. It is one among the four Vivek Expresses announced by Railway Minister Kum.Mamta Bonerjee to commemorate 150th birth anniversary of Swami Vivekananda.

This weekly train runs a total distance of 4,286 km from Dibrugarh

Dibrugarh

Dibrugarh is the headquarters of Dibrugarh district, Assam, India, and is the second largest city in Assam after Guwahati. It is situated on the banks of the Brahmaputra River, about north-east of Guwahati. It is the gateway to the three tea-producing districts of Tinsukia, Dibrugarh, and Sibsagar...

 (Station Code: DBRG) in upper Assam

Assam

Assam , also, rarely, Assam Valley and formerly the Assam Province , is a northeastern state of India and is one of the most culturally and geographically distinct regions of the country...

, to Kanyakumari

Kanyakumari

Kanyakumari is a town in the state of Tamil Nadu in India. It is also sometimes referred to as Cape Comorin. Located at the southernmost tip of the Indian Peninsula, it is the geographical end of the Indian mainland. The district in Tamil Nadu where the town is located is called Kanyakumari...

 (Station Code: CAPE) at the southern tip of India

India

India , officially the Republic of India , is a country in South Asia. It is the seventh-largest country by geographical area, the second-most populous country with over 1.2 billion people, and the most populous democracy in the world...

n peninsula via Trivandrum Central

Trivandrum Central

Trivandrum Central is the main railway station in the city of Thiruvananthapuram in the Indian state of Kerala. It is the largest and busiest railway station in Kerala in terms of passenger movement and the second most important rail hub in South India. It is also the most profitable station...

 , that will be covered in 82:30 hours (almost 4 days). There are 52 halts spanning across a total of 615 intermediate railway stations

Himsagar Express

Himsagar Express

Himsagar Express is the second longest running train on the Indian Railways in terms of distance and time. It runs from Kanyakumari in India's southernmost state, Tamil Nadu to Jammu Tawi, in Jammu & Kashmir - the northernmost state of India...

was previously the longest running train in India.