The swimming competitions at the London 2012 Olympics take place at the Aquatics Centre at the Olympic Park, apart from the 10 km marathon swim which takes place in the Serpentine in Hyde Park.
There are 34 medals to compete for at the Olympic Games; 16 for men and 16 for women with more than 950 athletes taking part.
Athletes compete in races using one of four stroke patterns:
Competitions are competed over a range of distances; from 50 m to 800 m. Swimmers competing in medley events will swim a combination of all four strokes within the same race. Medals will be won individually and also as a team in relay events.
Planning your journey to the Aquatic Centre? Check the five day weather forecast for all events at the Olympic Park.
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28 July - 10 August - Travelling to watch some of the swimming events at the London Olympics? Check the forecast.
At the Beijing Olympics in 2008, the United States of America topped the swimming medals table taking 31 medals. American swimmer Michael Phelps won eight Gold medals at the Beijing Olympics; six individual medals and two with the USA relay team.
Team GB swimmer Rebecca Adlington won two individual Gold medals in the 400 m and 800 m freestyle events.
Thousands of spectators will cheer on the athletes as they compete at the Aquatics Centre. Check the weather forecast for the Olympic Park if you are attending any of the swimming events.