| Heat | Impianto Sportivo Padovanuoto - 08 September 2023 - Start Time: 10:00 |
| Pos. | Lane | Bib | Athlete | Year | Cat. | | Mark | Points |
| 1 | 4 | 34 | STEPHENSON Ellen | 2004 | WSm | GBR GREAT BRITAIN & N. IRELAND | 1:35.75 q | |
| 2 | 5 | 54 | SCIANGUETTA Carmen | 1990 | WMm | ITA ITALY | 1:46.36 q | |
| 3 | 3 | 13 | EDWARDS Alex | 1999 | WSm | GBR GREAT BRITAIN & N. IRELAND | 2:01.31 q | |
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| Final | Impianto Sportivo Padovanuoto - 08 September 2023 - Start Time: 16:40 |
| Pos. | Lane | Bib | Athlete | Year | Cat. | | Mark | Points |
| 1 | 4 | 34 | STEPHENSON Ellen | 2004 | WSm | GBR GREAT BRITAIN & N. IRELAND | 1:34.21 | 9 |
| 2 | 5 | 54 | SCIANGUETTA Carmen | 1990 | WMm | ITA ITALY | 1:44.59 | 7 |
| 3 | 3 | 13 | EDWARDS Alex | 1999 | WSm | GBR GREAT BRITAIN & N. IRELAND | 1:59.53 | 6 |
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