Katie Ledecky delivered everything but the world record everyone had expected storming to victory in the women's 400 metres freestyle at the U.S. Olympic swim trials on Monday and securing her ticket to the Rio Games Ledecky is a threat to smash a record almost every time she dives into a pool and she clearly had her sight set on lowering her own mark in the 400 free But the 19-year-old faded badly over the final 200 settling for the third fastest time ever in the event of three minutes, 58.98 seconds