Louis’ two siblings, Billi and Jake, and father, Peter FitzSimons, ran alongside the course during his run, while mum Lisa stayed in the bleachers with the rest of the audience.
The Project co-host could be seen excitedly filming her son.
Speaking to the camera, Louis said: 'Although I am my parents’ son, I am my own man, and I’m here to prove that today.'
Louis unfortunately fell at the third obstacle, lasting just 30 seconds in the gruelling course.
However, he still made it to the semi-finals, finishing 15th on the night.
Hear our interview with Rob Mills, plus reviews of Sharp Objects, House Rules, You Can’t Ask That, Get Shorty and Snowfall on WHO’s TV podcast, Binge List. Subscribe on iTunes http://po.st/syE3JF, OMNY http://po.st/VmG0GO, or listen below: