The world's longest station platform is at Hubballi Junction in India at 1,507 metres (4,944 ft). The Appalachian Trail station or Benson station in the United States, at the other extreme, has a platform which is only long enough for a single bench.

The answer depends on whether you mean a physical railway platform or a digital platform. Physically, the Gorakhpur Railway Station in Uttar Pradesh, India, long held the record with a platform measuring 1,366 meters (4,483 feet). However, in 2023, the Hubballi Railway Station (also in India) officially took the title with its Platform No. 1 measuring 1,507 meters (nearly 5,000 feet). In the digital world, Google (Search) remains the biggest platform by total monthly active users and traffic, followed closely by Facebook (Meta) and YouTube. If you define "platform" by market capitalization, Microsoft or Apple often vie for the top spot. However, in common conversation regarding travel and infrastructure, the record-breaking long platforms of India are the standard answer, designed to accommodate two full-length trains simultaneously on a single stretch of track. This massive scale is a testament to the sheer volume of passengers moved by the Indian Railways system every single day.