(AAP Image/Julian Smith)
Australia's 410-strong Rio Olympic team has been finalised and needs to double the medal count from London to finish in the top five.
Australia's 410-strong Olympic team is complete and heads to Rio facing an unprecedented task to fulfil its aim of a top-five finish on the medal table.
Chef de mission Kitty Chiller finalised the team on Thursday when she announced the men's and women's rugby sevens squads, giving Australia its fifth biggest Olympic team in history.
But they are facing one of Australia's biggest Olympic challenges of all - to double the eight gold medals from London in 2012 and land back in the top five.
"We need to win 15, maybe 16, gold medals to make the top five," Chiller said.
"That's double the number of gold medals we won in London; for any country to double the number of gold in one quad is a huge ask. I genuinely believe we can do it."
(AAP Image/David Moir)
But it's never been done before at an away Games.
The biggest improvement Australia has made in one Olympiad has been at its two home Games, jumping from six gold in Helsinki in 1952 to 13 in Melbourne four years later and from nine in 1996 in Atlanta to 16 in Sydney.
Great Britain performed the biggest improvement of all more than a century ago, remarkably jumping from one gold in St Louis in 1904 to 56 at home in London in 1908. But things were different back then.
The Brits, however, have also set the transformation standard in recent Games. They went from one gold in Atlanta to 11 in Sydney and, after winning 19 in Beijing in 2008, claimed 29 in London.
Chiller says she's confident the team sports as well as the world-best swimmers, sailors, rowers and track cyclists can lay the foundation for an Australian change in fortunes.
Swimming historically provides a third of Australia's medals at a Games and with eight No.1-ranked swimmers going into Rio, they could set up the transformation, but Chiller has also called on the lower-profile sports to contribute.
"Do we like the fact we rely on the swimmers? - not necessarily," Chiller said.
"That's why we have a big push to get one or two medals from other sports across the board.
"The sports on the podium in Sydney and Athens need to get back there."
The Australian Olympic Committee benchmark based on 2015 results has Australia winning 13 gold, but Chiller believes perfectly timed preparation and tapering could convert the 18 fourths and fifths into medals.
She leaves for Rio on Friday and will start welcoming athletes into the village on July 25.
© AAP 2016