John Rowland wrote:
"Richard J." wrote in message
...

Yes, Northfields and South Ealing are the stations,
on the Piccadilly Line. They are only 0.48km apart.

Is that the distance between the station buildings? The platforms run
towards each other, so the nearest ends of the platforms must be only
about 240 metres apart.

The space between the ends of the platform is 850 feet or 259 meters. Not a
bad guess.