What suburb is halfway between Engadine, NSW and Campelltown, NSW?

Moorebanksee google maps directions|||Halfway between Engadine and Campbelltown youre out in the bush...nothing but a few kangaroos...if youre driving then depends which way you go,travelling north Prestons would be about halfway between the 2|||There isn;t a suburb in between directly (there is the bushland of Heathcote National Park in between), but by main road the halfway point is probably Glenfield.