The final three teams battle it out in the air, land, and sea as they race to the last pit stop near the 12 Apostles on the Victorian coast in the hope of winning the grand prize of $250,000.

In the race to the final three, teams step up their game as they race across Buenos Aires, Argentina. Each team will tackle preparing a horse for a polo match and tango dancing.

From Portugal, teams travel to Croatia and the old city of Dubrovnik where they have trouble negotiating the old cobbled streets. The only Fast Forward in the series calls for an act of devotion that leaves a lasting impression.

Teams travel to Lisbon, Portugal where they're put through the basics of singing, counting, and reading detail in their clues. Newlyweds Ashleigh and Jarrod face the biggest test of their relationship since getting married. Local seafood delights turn into an ordeal for everyone.

With no rest period between legs, teams are still racing and heading for Kostroma in central Russia. They face a nation v nation challenge and the last team to the mat surprises all, but will a twist at the pit stop save them?

The contestants race from Africa to St Petersburg, Russia. A task to re-code naval flag signals divides alliances, and the pit stop conclusion surprises everybody.

The remaining teams make their way to Namibia in Africa and come face to face with the local wildlife. Tension is running high and threatens to turn physical between Kiwis Jono and Johnny.

The remaining teams make their way from Cambodia to Thailand on foot and then have to deal with a long bus ride to get to their destination.

The remaining nine teams leave New Zealand as they make their way to Cambodia where they are faced with tough challenges, including eating fried tarantulas.

Australia and New Zealand are pitted against each in 10 teams of two – five from each country. On the first leg they travel from Australia to Christchurch New Zealand, where the last team to arrive at the pitstop may be eliminated.