Imagine you are standing in on Bennalong Point on the Opera House steps looking at the Harbour Bridge in Sydney Harbour.
Now, get in your car, and drive south down Maquarie St. away from the Opera House. Turn right at Albert St., then take the first left on to Phillip St. Drive about 2 minutes, then turn Right at Bridge St. Turn left into George St. through Ultimo, Glebe, Pyrmont, past Five Dock down Parramatta Rd., through Strathfield.
Join the M4 Motorway.
Now drive through Homebush, Granville, Parramatta, Merrylands, and Westmead.
Keep driving through St Mary’s and St. Clair, and when you reach Orchard Hills, you will see a turn off to your left to the Northern Road. Pull over.
You have just driven the same distance that exists between the Blue Mountains Hospital in Katoomba and Nepean Hospital in Penrith- a distance of 51km.