Caster Semenya: 2009 world champion 'cannot stop running'

Former 800m world champion Caster Semenya tells BBC Sport's Ben Smith she will continue to run despite public questioning of her gender.

The 24-year-old had to undergo a gender test following her win at the 2009 World Championships.

The London 2012 silver medallist - who describes herself as "a dreamer" - believes she can become Olympic champion and break the world record.

You can skip to these parts to hear Semenya on:

01:10: How her experiences have matured her as a person and an athlete

03:00: Her memories of the 2009 World Championships in Berlin

04:41: The "ultimate dream" of winning Olympic gold and breaking world records

BBC Sport