The fourth season of the sports entertainment reality competition series Australian Ninja Warrior premiered on 26 July 2020 on the Nine Network. The season is hosted by Rebecca Maddern, Ben Fordham, Freddie Flintoff and Shane Crawford.
On 17 October 2019, the series was officially renewed for a fourth season at Nine's upfronts, also confirming Fordham, Maddern and Flintoff were returning. The series was again relocated, with filming taking place at Melbourne Showgrounds in Ascot Vale. Due to the COVID-19 pandemic, production introduced audience lock-out, meaning members of the public could not attend as audience; only family members of contestants were allowed to attend. Co-host Rebecca Maddern, was temporarily placed in self-isolation and replaced by Shane Crawford for two heats, before being cleared and returning to filming. Crawford returned to the season as the sideline commentator for the semis and Grand Final after Freddie Flintoff had to fly back to the UK before coronavirus pandemic measures came into effect.
<u>Underline</u> represents the contestant who won the Speed Pass in the qualifying heats as a result of winning the head to head competition on the Power Tower.
represents the contestant who won the Safety Pass in the semi-finals as a result of winning the head to head competition on the Power Tower.
Italics denotes female competitors.
This episode aired on 26 July 2020. Only 6 competitors completed this course, with a large number of athletes bowing out on the Doorknob Drop. Returning athlete Ashlin Herbert received a 10-second advantage for the semi-finals, after beating Daniel Mason on the Power Tower.
This episode aired on 27 July 2020. Only 2 competitors completed this course, with a large number of athletes bowing out on the Doorknob Drop. Returning athlete Ben Polson received a 10-second advantage for the semi-finals, after beating Olivia Vivian on the Power Tower.
This episode aired on 28 July 2020. Only 3 competitors completed this course, with a large number of athletes bowing out on the Bar Hop. Returning athlete Sam Goodall received a 10-second advantage for the semi-finals, after beating Matt Filippi on the Power Tower.
This episode aired on 2 August 2020. 10 competitors completed this course, with a large number of athletes bowing out on the Basket Toss. Returning athlete Charlie Robbins received a 10-second advantage for the semi-finals, after beating Bryson Klein on the Power Tower.
This episode aired on 3 August 2020. The top 12 competitors all completed the course. Returning athlete Zak Stolz received a second chance advantage for the Grand Final, after beating Jordan Papandrea on the Power Tower.
This episode aired on 4 August 2020. Five competitors completed this course, with a large number of athletes bowing out on the Slingshot. Returning athlete Charlie Robbins received a second chance advantage for the Grand Final, after beating Matthew Bowles on the Power Tower.
This episode aired on 9 August 2020.
Competitors had to complete Stage 1 within 3 minutes and 45 seconds to advance to Stage 2. Only 8 of the 24 semi-finalists managed to complete all the obstacles in time. Olivia Vivian became the first woman to advance to Stage 2 of the Grand Final in the history of the Australian competition.
This episode aired on 10 August 2020. Contestants had 2 minutes and 15 seconds to finish the six obstacles that were Stage 2.
Unlike the first two stages, no time limit was imposed on the Ninjas to complete Stage 3. Completion of this stage resulted in progressing to Stage 4.
Competitors have to climb up a single rope up 20 metres to the top of Mt. Midoriyama within 30 seconds. For the first time in 4 seasons, 3 people made the top of Mt. Midoriyama. They are allowed to hit the buzzer before fully completing the ascent to the top.
Time Limit 1:50