Overview: Some of the most favoured returning heroes, Australia's most infamous party boy Corey Worthington and Red Wiggle Simon Pryce are among the 50 competitors who tackle the Quntuple Steps, Rolling Pin to Bungee, Bridge of Blades, Rope to Cargo Net, Big Wheels and Warped Wall. The 20 competitors who make it the furthest the fastest will advance to the semi-finals.