If you use miles as a unit of length than - the distance from Berowra Heights to Ferntree Gully is zero miles.
The road trip out of Berowra Heights to Ferntree Gully will take if you drive with average speed and the absence of accidents and traffic jams
Watch distance between Berowra Heights and Ferntree Gully
Flight from Berowra Heights to Ferntree Gully