Swemming

The aquatic sport of swimming involves competition among participants to be the fastest over a given distance under self propulsion.
The different events include 25(8&U), 50, 100, 200, breaststroke, backstroke and butterfly, the 25(8&U), 50, 100, 200, 400, 500, 800, 1000, 1500, and 1650 free and the 100, 200, and 400 individual medley (IM, consisting of all strokes).

In the modern age the swimming competition was instituted in Great Britain at the end of the 18th century. The first organization of this type was the National Swimming Society, been founded on London in 1837.