Aronai Express

Aronai Express
Overview
Service type	Superfast Express
First service	14 April 1987 (Inaugural run); 21 November 2017 (extended upto Silchar);
Current operator	Northeast Frontier Railway
Route
Termini	Thiruvananthapuram Central (TVC); Silchar (SCL)
Stops	55
Distance travelled	3,915 km (2,433 mi)
Average journey time	71 hrs 20 mins
Service frequency	Weekly
Train number	12507 / 12508
On-board services
Classes	AC three tier economy, AC 2 Tier, AC 3 Tier, Sleeper Class, General Unreserved
Seating arrangements	Yes
Sleeping arrangements	Yes
Catering facilities	Available
Observation facilities	Large windows
Baggage facilities	Available
Other facilities	Below the seats
Technical
Rolling stock	LHB coach
Track gauge	1,676 mm (5 ft 6 in)
Electrification	Partial, Route Electrified Until Lumding in Assam
Operating speed	45 km/h (28 mph) average including halts.
Route map
Route map

The 12507 / 12508 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 in Kerala and Silchar in Assam. It is the 28th longest train service in the world. Initially, Thiruvananthapuram–Silchar Aronai Superfast Express ran between Thiruvananthapuram Central and Guwahati via Katpadi, Cuttack, Kharagpur, Rampurhat, Malda Town, New Jalpaiguri. On 21 November 2017, it was extended to Silchar. After this extension, it is now the second longest running train in India.

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. The Indian Railway Have Decided to Degrade this train from Superfast to Express with New Numbers 15607/15608