The question on Australia's lips. Can anyone climb Mt Midoriyama? The best of the Ninja Warriors go head to head in the Season Final.

Only the fittest and the fastest Ninja Warriors will survive as they take to the Grand Final course and race against the clock.

It's the last of the semi-finals and Australia's favourite tradie Sam Goodall leads the charge as the remaining Ninja Warriors fight for the last 8 places in the Grand Final.

Australian Ninja Warrior is back with 300 Ninjas taking on the World's toughest obstacle course in their quest to become Australia's first Ninja Warrior.

Australian Ninja Warrior is back with 300 Ninjas taking on the World's toughest obstacle course in their quest to become Australia's first Ninja Warrior.

Only the very best made it through the heats, but now the competition steps up a gear as we enter the semi-finals of Australian Ninja Warrior.

In the last of the heats the lightest and heaviest Ninjas compete, plus Bachelor Tim Robards and the first woman to scale the warped wall last season, Andrea Hah.

With semi-final spots filling fast, who will make it through tonight? All eyes are on one of Australia's favourite Ninjas from last season, "Deadly" Jack Wilson.

It's a night of shock exits, sensational runs and history making feats when Australia's biggest Ninja superstars battle the course.

Tonight's episode features some of this season's most favoured returning heroes plus Australia's most infamous party boy Corey Worthington and Red Wiggle Simon Pryce.

A mix of newcomers and returning heroes take to the course, including NRL legend Paul Gallen, miracle Mum Tash Sergi and a Ninja favourite - tradie Sam Goodall.

Australian Ninja Warrior is back with 300 Ninjas taking on the World's toughest obstacle course in their quest to become Australia's first Ninja Warrior.