Swimming at the 2013 World Aquatics Championships

If a nation entered one competitor in an event then they only have to meet the B standard, but if they enter two competitors then in an event then they both have to meet the A standard. Each member nation can enter one relay team in each event. Qualifying standards must have been met between July 1, 2012, and July 1, 2013. Competition format: • events 200 meters and under: preliminaries-semifinals-finals (top 16 finishers from prelims advanced to semifinals; top-8 in the semifinals advanced to the final). • events 400 meters and longer: prelims/final (top 8 finishers from prelims advanced to the final). ==Schedule==

During the World Aquatic Championships, five world records were set (one twice), all by women. Katie Ledecky of the United States broke the world record in the 800-metre freestyle and the 1500-metre freestyle events en route to two gold medals. She also won the 400-metre freestyle to go 3-for-3 in her events. Franklin also moved into a tie with Trickett for most all-time gold medals with nine. Rūta Meilutytė of Lithuania broke both the 50-metre and 100-metre breaststroke records in the semi-final of each event. Denmark's Rikke Møller Pedersen set the 200-metre breatstroke record in that event's semi-finals. However, it was Russia's Yuliya Yefimova who won the gold medal in both the 50-metre and 200-metre events, while Meilutytė took gold in the 100-metre. César Cielo became the first three-time World Champion of the 50-metre free, winning a final that featured three Olympic gold medalists. ==Medal summary==

The United States won the overall medal count with 29 medals (24% of total available) and 13 golds (32%). China won the second most golds (5), but just 9 medals overall (down from 14 in the last World Championships). Australia won 13 medals (3 gold) for second place on the total medal count. Russia won 8 medals, the most for the nation since 1998. Germany, Great Britain, and Italy, all historically strong swimming nations, won just four medals among them. Medal table Host nation Men Women ==Records==

The following world and championship records were broken during the competition. World records Championship records Legend: † – en route to final mark ==References==