Chennai–Charlapalli Superfast Express

Hyderabad Super fast express
Overview
Service type	Superfast Express train
Locale	Telangana, Andhra Pradesh & Tamil Nadu
Current operator(s)	Southern Railway(SR)
Route
Termini	Hyderabad; Chennai Central
Stops	19
Distance travelled	715 km (444 mi)
Average journey time	13 hours
Service frequency	Daily
Train number(s)	12604 / 12603
On-board services
Class(es)	1 AC First Class,2 Two-tier AC,2 Three-tier AC,13 Sleeper class,3 General,2 SLR
Seating arrangements	Yes
Sleeping arrangements	Yes
Catering facilities	Yes
Technical
Track gauge	1,676 mm (5 ft 6 in)
Operating speed	55 km/h (34 mph) average with halts

The Hyderabad S/F Express is a Superfast express in India which runs between Hyderabad and Chennai Central. It was introduced on 1 April 1966. This train is named after the Hyderabad city. The Southern Railway(SR) of the Indian Railways administers this train & the train shares its rakes with 22649/22650 Yercaud Express.

Numbering

Train Number 12604 runs from Hyderabad to Chennai Central while 12603 runs from Chennai Central to Hyderabad.

The 12604 starts from Hyderabad at 16:50 hours and reaches Chennai Central at 05:55 hours the following day. Similarly the 12603 leaves Chennai Central at 16:45 hours and reaches Hyderabad at 05:45 hours the following day. The train runs via Sullurpeta, Naidupeta, Gudur, Nellore, Kavali, Ongole, Chirala, Bapatla, Tenali, Guntur, Sattenapalle, Piduguralla, Nadikudi Jn, Miryalaguda, Nallagonda, Secunderabad and Hyderabad Deccan

The 23 coach composition contains– 1 AC First Class,2 Two-tier AC,2 Three-tier AC,13 Sleeper class,3 General,2 SLR