The 22661 / 22662 Sethu Superfast Express is a Superfast train route of the Southern Railway zone of the Indian Railways and runs between Chennai Egmore and Rameswaram via Chord line.

The train covers a distance of 603 km (375 mi) with an average speed of 69 km/h (43 mph).

The King of Ramanathapuram Samasthanam (Princely State) in Tamil Nadu bore the title Sethupathy.

So the train running through this princely territory is named as Sethu express The other reason being it connects the peninsular sub continental India with the Island city of Rameshwaram using the Pamban bridge.

This Indian express train article is a stub.