I responded this on another thread, anyhow gone now, but up to the closure
of Manchester Exchange late 60s, A platform was shared with Manchester Victoria this was platform eleven, the longest platform in the world.
Exchange Station
Almost nothing remains of Exchange Station except for a bit of a platform, most of the rest of it is buried under various car parks. Exchange station used to stand at the south end of Victoria station and even used to share one platform. This was the longest railway platform in the world. 2194 feet (669m).
It was opened by the London and North Western railway in 1884 as it was not happy with arrangement at Victoria. The LMS linked the two stations by Platform 11 in 1923. Exchange served north Wales, Liverpool via Earlstown and some Trans Pennine services. The station suffered extensive bombing during the war, and when traffic at Victoria lightened in the 1960s, Exchange was closed in 1969. The roof survived into the 1980s, now only some of the platforms and a footbridge remain.
But over 3000 ft long thats some platform in India