|Competitions held||8 (Venues)|
Marathon swimming is also referred to as open-water swimming as it is held in an open body of water, as opposed to a pool. The discipline made its Olympic début at the 2008 Beijing Olympics, with a single 10 km open water race for men and women. Marathon swimming has been contested at the World Aquatics Championships since 1998, where men and women race over 5 km, 10 km, and 25 km. Open-water swimming has been around much longer than that, however, as many races in the 19th and early 20th century were held in open water, including the swimming events at the 1896, 1900, and 1904 Olympic Games.
|Sharon van Rouwendaal||NED||1||1||0||2|
|Maarten van der Weijden||NED||1||0||0||1|
|Ana Marcela Cunha||BRA||1||0||0||1|
|Name||Gender||Still contested?||Times held?|
|10 kilometres Open Water||Men||4|
|10 kilometres Open Water||Women||4|