According to Official Guinness Records,
Magdalena Solich-Talanda (Poland) swam 191 m (626 ft 7 in) underwater on a single breath at the Polish Pool Freediving Championships in Opole, Poland, on 1 July 2017. She smashed her existing record by six metres, in a dive that lasted a total of 3 minutes 21 seconds.
For a complete list of 2017 records, please visit 2017 Guinness Records in Poland.