Fastest swim long course 100 metres freestyle (female)

According to Official Guinness Records,

The fastest 100 metres long course freestyle swim by a female athlete is 51.71 seconds and was achieved by Sarah Sjöström (Sweden) at the FINA World Championships in Budapest, Hungary, on 23 July 2017. She set the mark during the first leg of the women’s 4 x 100 m freestyle relay, in which Sweden finished fifth. It was the first sub-52 second swim recorded in the event. Sjöström also broke the record for the women’s 50 m freestyle at the same championships.

For a complete list of 2017 records, please visit 2017 Guinness Records in Hungary.

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