Heathcote National Park is a protected national park that is located in the southern area of Sydney, New South Wales in eastern Australia, and is situated on Dharawal country. The 2,679-hectare national park is situated approximately 35 kilometres southwest of the Sydney central business district, west of the Illawarra railway line, the Princes Highway and M…Heathcote National Park is a protected national park that is located in the southern area of Sydney, New South Wales in eastern Australia, and is situated on Dharawal country. The 2,679-hectare national park is situated approximately 35 kilometres southwest of the Sydney central business district, west of the Illawarra railway line, the Princes Highway and Motorway, and the suburbs of Heathcote and Waterfall.