Swimming at Rio 2016 will feature 34 events (17 each for men and women). Pool events will include freestyle, backstroke, breaststroke, butterfly, medley and relays. However, the most grueling event has to be the 10km marathon in open water!

Official FINA website

FINA is the international governing body of swimming, diving, water polo, synchronized swimming and open water swimming. Find out who the top-rated swimmers in the world are.

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