The Amazing Race Australia returns longer, tougher and more challenging than ever as racers vie for the $250,000 prize. Eleven new diverse teams will travel more than 65,000 kilometres across four continents on a route which includes a mix of iconic sites and some very surprising destinations.

The adventure continues as the teams head for India. Sparks fly when one couple struggles to navigate the chaotic streets of Delhi, while another team trips up milking cows. And could a breach of the race rules prove very costly for one pair?

The remaining teams are forced to take on a driving test on the chaotic streets of of Jaipur, India. A run-in with workmates Paul and Steve sees engaged couple Kym and Donna left reeling. An old abyrinthine step-well could prove to be the undoing of one of the teams.

The teams have to race through the deserts of Dubai but getting from A to B could prove to be their greatest challenge yet. After one team is arrested, the idea of making it to the pit stop seems a long way off.

The remaining teams heads to Istanbul and some teams turn on one another while others turn on workmates Paul and Steve. A simple market challenge manages to test the patience of all of the teams. An ancient treasure could be the undoing of one pair of race favourites.

The remaining teams battle it out over the latest leg of the competition as they make their way towards Turkey.

The teams are pleased after they learn that they are heading to Paris and straight into a culinary adventure. There is friction after Joseph and Grace steal Sarah and James' taxi, and the ramifications will still be felt thousands of kilometres away.

Joseph and Grace soon discover that the consequences of 'Taxigate' are far-reaching as they're confronted by James and Sarah in Cuba. A detour which involves two Cuban icons ends with aome shocking results. The teams are then surprised to learn they're heading for 'Australia'. The streets of Havana could prove to be the end for one of the race favourites.

As teams make their way to Vancouver, and a 'sleep in' could prove costly for one couple. Rivalry between the policemen and Paul and Steve heats up. Some cracks appear in more than of the other teams.

The teams battle it out in Banff in the beautiful Canadian Rocky Mountains. They find the going tough on the snow and ice and atempting to climb a frozen waterfall proves particularly difficult or a race favourite.

The three remaining teams battle it put across two continents in the quest to cross the finish line first.