Isn't Perth the city that's farthest away from any other city in the world? Obviously that depends on the criteria which I can't remember, but the people I know

Isn't Perth the city that's farthest away from any other city in the world? Obviously that depends on the criteria which I can't remember, but the people I know from there have all complained that if you're bored of the city it's almost as easy to go to another country as it is to go to another city in Australia.