Thiruvananthapuram–Silchar Aronai Superfast Express

The Thiruvananthapuram–Silchar Aronai Superfast Express is a Superfast Express train belonging to Indian Railways. It is operated by Northeast Frontier Railway zone that runs between Thiruvananthapuram Central and Silchar in India. It is the 28th longest train service in the world. Initially, Thiruvananthapuram–Silchar Aronai Superfast Express ran between Thiruvananthapuram Central and Guwahati. On 21 November 2017, it was extended to Silchar.[3] After this extension, it is now the longest-running superfast train and the second longest running train in India.

Thiruvananthapuram Silchar Aronai Superfast Express

Overview
Service type	Superfast Express
First service	January 1984 (1984-01) (Initial run) 1 July 2013 (2013-07-01) (extended to Thiruvananthapuram Central)[1] 21 November 2017 (2017-11-21) (extended to Silchar)[2]
Current operator(s)	Northeast Frontier Railway zone
Route
Termini	Thiruvananthapuram Central Silchar
Stops	56
Distance travelled	3,915 km (2,433 mi)
Average journey time	74 hrs 5min.
Service frequency	Weekly
Train number(s)	12507 / 12508
On-board services
Class(es)	AC 2 tier, AC 3 tier, Sleeper Class, General Unreserved
Seating arrangements	Corridor coach
Sleeping arrangements	Couchette car
Auto-rack arrangements	No
Catering facilities	Yes
Observation facilities	Large windows
Baggage facilities	Over head racks
Technical
Rolling stock	ICF coach
Track gauge	1,676 mm (5 ft 6 in)
Electrification	Partial
Operating speed	55 km/h (34 mph)
Route map

The express train service was started on 14 April 1987. It operates as train number 12507 from Thiruvananthapuram Central to Silchar and as train number 12508 in the reverse direction serving the 8 states of Assam, West Bengal, Bihar, Jharkhand, Odisha, Andhra Pradesh, Tamil Nadu and Kerala.[4][5]