It used to be called mileage, since 1974 Australia is metric. This number is the distance from the buffer stop at Central station in Sydney. In the Up direction of course. Still at Seven Hills station.
Elizabeth Bay - named in honour of Governor Lachlan Macquarie’s wife, Elizabeth. The area was originally known by the Aboriginal name 'Yarrandabby'. I like the old name better - it had a certain ring to it.