TheFINA Marathon Swim World Series, known as the 10 km Marathon Swimming World Cup until 2017, is a series of 10-kilometer,open water swimming races held annually since 2007. Prior to 2007, 10K races were held as part of the FINA's Open Water Grand Prix series; post split, this latter series is now for races over 10 kilometers in length. Prizes and points are awarded for each race in the series, with the points being added together for an overall point standing (and overall awards).
Names for individual editions of the World Series have varied over time, with titles including Marathon Swimming World Cup, Marathon Swim World Series, Open Water Tour, and Open Water Swimming World Cup.
In October 2010, the eighth and final race of the series inFujairah, UAE made news following the death of the USA'sFran Crippen during the race. In December 2021, at the final leg of the year's World Series, a 4×1500 metre mixed relay event was debuted as part of theAbu Dhabi Aquatics Festival.[1]
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