An Ironman is one of sport's toughest challenges - requiring monster swims and bike rides and a marathon run - so just imagine wanting to do one after nearly losing your legs in a horrific chainsaw attack.

In March, Mhlengi Gwala was ambushed on an early morning training run in his native South Africa by three men who dragged him into bushes at gunpoint and tried to saw off his legs.

Remarkably, not only did the 27-year-old survive with both legs intact, he returned to running just four months later - with an iron will and an unbreakable spirit.

"I will do it soon, maybe after three or four years. As soon as I have fully recovered I will do it," Gwala told BBC Sport Africa.

"I won't sit in a house and lock myself in the doors because of them. I have to come out and do what I love."