The women's 4 × 100 metre freestyle relay event at the 1956 Olympic Games took place on 4 and 6 December. This swimming event used freestyle as a relay, with swimmers typically using the front crawl. Because an Olympic size swimming pool is 50 metres long, each of the four swimmers completed two lengths of the pool. The first swimmer had to touch the wall before the second could leave the starting block; timing of the starts was thus important.
James Magnussen is a retired Australian swimmer and Olympic medallist. He was the 2011 and 2013 100-metre freestyle world champion, and holds the record for the fifth fastest swim in history in the 100-metre freestyle, with a time of 47.10, which until 2016 also stood as the fastest swim in textile swimwear material.
The men's 4 × 100 metre freestyle relay competition of the swimming events at the 2011 Pan American Games took place on 16 October at the Scotiabank Aquatics Center. The defending Pan American Games champion is the Brazil.
Bruno Giuseppe Fratus is a Brazilian competitive swimmer. He won a bronze medal in the 50-metre freestyle at the 2020 Summer Olympics in Tokyo. In July 2021, Fratus became the first swimmer in history to swim the long course 50 metre freestyle race in less than 22 seconds 90 times. He surpassed this mark by swimming his 100th sub-22 second 50 metre freestyle at the 19th World Aquatics Championships in June 2022.
The men's 4 × 100 metre freestyle relay competition of the swimming events at the 1979 Pan American Games took place on 3 July at the Piscina Olimpica Del Escambron. The last Pan American Games champion was the United States.
The women's 4 × 100 metre freestyle relay competition of the swimming events at the 1979 Pan American Games took place on 7 July at the Piscina Olimpica Del Escambron. The last Pan American Games champion was the United States.
The men's 4 × 100 metre freestyle relay competition of the swimming events at the 1983 Pan American Games took place on 20 August. The last Pan American Games champion was the United States.
The women's 4 × 100 metre freestyle relay competition of the swimming events at the 1983 Pan American Games took place on 19 August. The last Pan American Games champion was the United States.
The men's 4 × 100 metre freestyle relay competition of the swimming events at the 1991 Pan American Games took place on 16 August. The last Pan American Games champion was the United States.
The men's 4 × 100 metre freestyle relay competition of the swimming events at the 1995 Pan American Games took place between March 12–17 at the Complejo Natatorio. The last Pan American Games champion was Brazil.
The women's 4 × 100 metre freestyle relay competition of the swimming events at the 1995 Pan American Games took place between March 12–17 at the Complejo Natatorio. The last Pan American Games champion was the United States.
The men's 4 × 100 metre freestyle relay competition of the swimming events at the 1999 Pan American Games took place on August 5 at the Pan Am Pool. The last Pan American Games champion was the United States.
The women's 4 × 100 metre freestyle relay competition of the swimming events at the 1999 Pan American Games took place on August 4 at the Pan Am Pool. The last Pan American Games champion was the United States.
The women's 4 x 200 metre freestyle relay competition at the 2014 South American Games took place on March 7 at the Estadio Nacional. The last champion was Brazil.
The men's 4 x 200 metre freestyle relay competition at the 2014 South American Games took place on March 8 at the Estadio Nacional. The last champion was Venezuela.
The men's 4 x 100 metre freestyle relay competition at the 2014 South American Games took place on March 10 at the Estadio Nacional. The last champion was Venezuela.
The men's 4 × 100 metre freestyle relay competition at the 2014 Pan Pacific Swimming Championships took place on August 23 at the Gold Coast Aquatic Centre. The last champion was the United States.
The women's 4 × 100 metre freestyle relay competition at the 2014 Pan Pacific Swimming Championships took place on August 23 at the Gold Coast Aquatic Centre. The last champion was the United States.
The women's 4 × 100 metre freestyle relay competition of the swimming events at the 2015 Pan American Games took place on July 14 at the CIBC Pan Am/Parapan Am Aquatics Centre and Field House in Toronto, Canada. The defending Pan American Games champion is the United States.
The men's 4 × 100 metre freestyle relay competition of the swimming events at the 2015 Pan American Games took place on July 14 at the CIBC Pan Am/Parapan Am Aquatics Centre and Field House in Toronto, Canada. The defending Pan American Games champion is Brazil.
