Imagine sprinting through mud, climbing towering walls, and diving under barbed wire—all in the name of time. Obstacle races take more than just sports; they are an extreme test of endurance, skill, ...

Members of Great Britain's modern pentathlete squad talk about adapting to the new 'Ninja Warrior' style obstacle course brought into the sport.

JOHNNY: It's the wall, Mia will have no choice JOHNNY ... are essential to success in this challenge. Create your own obstacle course, either in the classroom, school hall or playground ...