The women's 4 × 100 metre freestyle relay took place on 14 August at the Olympic Aquatic Centre of the Athens Olympic Sports Complex in Athens, Greece.
Magdalena Johanna Maria "Marleen" Veldhuis is a retired swimmer from the Netherlands. She was world record holder in four events. Veldhuis won eight world championships gold medals and 20 European championships gold medals. In the Olympics, she won a bronze medal in London 2012 in the 50 m freestyle, as well as three relay medals: bronze in Athens 2004, gold in Beijing 2008, and silver in London 2012.
Manon van Rooijen is a freestyle swimmer from the Netherlands, who was a member of the Dutch Women's 4 × 100 m freestyle relay Team that won the silver medal at the 2000 Summer Olympics in Sydney, Australia. She did so alongside Inge de Bruijn, Wilma van Hofwegen and Thamar Henneken.
Chantal Groot is a butterfly and freestyle swimmer from the Netherlands, who has represented her country in many international championships since 1999. The best distance of Chantal Groot is the 50 m butterfly in which she won five European LC Championships medals, for the first time in 1999 in Istanbul, and became European Champion in 2008 in Eindhoven.
Inge Dekker is a Dutch former competitive swimmer who specialised in butterfly and freestyle events. She won the bronze medal with the Dutch women's 4×100-metre freestyle relay team at the 2004 Summer Olympics in Athens, alongside teammates Inge de Bruijn, Marleen Veldhuis and Chantal Groot. At the 2008 Summer Olympics in Beijing, Dekker became Olympic champion in the 4×100-metre freestyle together with Ranomi Kromowidjojo, Femke Heemskerk and Marleen Veldhuis, setting a then Olympic record. At the 2012 Summer Olympics, she was part of the Dutch 4 x 100 metre freestyle team that won the silver medal, with Veldhuis, Heemskerk and Kromowidjojo, behind the Australian team who set a new Olympic record.
Britta Steffen is a German competitive swimmer who specializes in freestyle sprint events.
The women's 4 × 100 metre freestyle relay event at the 2000 Summer Olympics took place on 16 September at the Sydney International Aquatic Centre in Sydney, Australia.
Ranomi Kromowidjojo is a retired Dutch swimmer of mixed Dutch-Javanese Surinamese origin who mainly specialises in sprint freestyle events. She is a triple Olympic champion, winning the gold medal in the 4 × 100 m freestyle relay at the 2008 Olympics, and in the 50 m freestyle and 100 m freestyle at the 2012 Olympics. Kromowidjojo holds the world record in the 50 meter freestyle short course, and as part of the Dutch team she holds the world records in the 4×50 m, 4 × 100 m, and 4 × 200 m freestyle relays. She has won a total of 39 medals in FINA World Championship events.
Frederike Johanna Maria "Femke" Heemskerk is a former Dutch competitive swimmer who mainly specializes in freestyle, but also has a strong backstroke and medley.
Francesca Jean Halsall is a retired English competitive swimmer who has represented Great Britain at the Olympics, FINA world championships, and European championships, and England at the Commonwealth Games. She competed primarily in freestyle and butterfly events.
Cate Natalie Campbell, is a Malawian-born Australian competitive swimmer, and a current multiple world record holder, who won two bronze medals at the 2008 Summer Olympics, a gold medal at the 2012 Summer Olympics, a gold and a silver medal at the 2016 Summer Olympics and a gold medal at the 2020 Summer Olympics. She is the current world record holder in the Long Course 4 x 100 m Freestyle Relay with Team Australia and the short course 100 m freestyle. Campbell was one of the flagbearers for Australia at the Tokyo 2020 Olympics alongside basketball player Patty Mills.
The women's 4 × 100 metre medley relay event at the 2008 Olympic Games took place on 15 and 17 August at the Beijing National Aquatics Center in Beijing, China.
The women's 50 metre freestyle event at the 2008 Olympic Games took place on 15–17 August at the Beijing National Aquatics Center in Beijing, China.
The women's 50 metre freestyle event at the 2012 Summer Olympics took place on 3–4 August at the London Aquatics Centre in London, United Kingdom.
The women's 4 × 100 metre freestyle relay event at the 2012 Summer Olympics took place on 28 July at the London Aquatics Centre in London, United Kingdom.
The women's 4 × 100 metre medley relay event at the 2012 Summer Olympics took place on 3–4 August at the London Aquatics Centre in London, United Kingdom.
Bronte Campbell is a Malawian-born Australian competitive swimmer, a dual Olympic gold-medal winner and world champion. Her older sister, Cate, is also a competitive swimmer, and once held world records in both the short and long course 100 metre individual freestyle events. Bronte and Cate are the first Australian siblings on the same Olympic swimming team since the 1972 Olympics and the first Australian sisters ever to compete within the same swimming event at the Olympics. Bronte Campbell won three gold medals at the 2015 World Championships, including the 50 and 100 metre freestyle events.
The women's 4 × 100 metre freestyle relay event at the 2016 Summer Olympics took place on 6 August at the Olympic Aquatics Stadium.
The women's 4 × 100 metre medley relay event at the 2016 Summer Olympics took place on 12–13 August at the Olympic Aquatics Stadium in Rio de Janeiro. By winning gold, the U.S. women brought home America's 1000th gold medal in the nation's Summer Olympics history.
Mollie Grace O'Callaghan, is an Australian swimmer. She competed in the 2020 Summer Olympics. O'Callaghan swam on the first night of racing in the heats of the women's 4 × 100 m freestyle. She ended up winning 2 gold medals and a bronze medal, all from heat swims. She attends St. Peter’s Western swim club.
