8 of the most impressive Olympic feats of all time

On August 11, swimmer Michael Phelps won his 13th individual gold medal at the Rio 2016 Summer Olympic Games.

At that moment he broke a record for individual titles set by the ancient runner Leonidas of Rhodes, who won 12 individual events, with his last Olympic victory happening in 152 BCE, more than 2,000 years ago.

Phelps, with his 23 gold medals overall, is pretty great - "the greatest Olympian of all-time," according to Olympic historian Dr. Bill Mallon.

But his moments of triumph are far from the only incredibly impressive ones out there. Here are some of the most impressive Olympic feats of all time.