Trivia

Erika Christensen took cello lessons for three months prior to filming.

Swimfan (2002) opened in the number one spot at the North American box office in its first week of release, earning $12.4 million and beating My Big Fat Greek Wedding (2002) and City by the Sea (2002).

Swimfan (2002) was shot in New Jersey and New York. It was partly financed by Furthur Films, a production company founded by actor Michael Douglas.

Erika Christensen (Madison) and Jason Ritter (Randy) also worked together on Parenthood (2010).

Erika Christensen's character also engages in coitus in a swimming pool in The Banger Sisters (2002), released the same year.

Joseph M. Caracciolo Jr.: The film's producer plays a policeman during the opening credits.