Freestyle swimming has been included in every modern Olympics ... as athletes often appear to be leaping out of the water with each stroke. The butterfly technique initially developed from ...

Butterfly is a difficult stroke to swim as it needs both stamina and style. The movements you need to make, however, are not difficult because you will have done many of them before in other strokes.

To win at butterfly you'll need a good dolphin. It's the kick used between strokes with both legs together. Long course races are swum in a 50m pool. In a 25m pool the races are called short course.

Both swimmers surpassed the standard of 57.34 set by the Japan Swimming Federation for sending athletes to the Paris Games. Ikee competed in the 100-meter butterfly at the 2016 Rio de Janeiro ...