Marmion Avenue is a 40-kilometre arterial road in the northern coastal suburbs of Perth, Western Australia, linking Trigg in the south with Yanchep in the north. It forms part of State Route 71 along

Merriwa is a coastal, northern suburb of Perth, Western Australia, 36 kilometres north of the central business district. It is part of the City of Wanneroo local government area. It is a predominantly