EVENT 301 Female MC 50m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 1 | Cheuk Yan Ng | 14 | S6 | HONG KONG | |
| 1 | 2 | Kirsty Gibb | 21 | S8 | Kelso | 1:23.00 |
| 2 | 3 | Tabea Nele Teschauer | 18 | S7 | GERMANY | 1:03.84 |
| 3 | 4 | Ava Garde | 14 | S6 | Satellite | 59.91 |
| 4 | 5 | Rose Webb | 13 | S6 | Northampton | 51.28 |
| 5 | 6 | Ida Corcoran | 15 | S9 | Flitwick | 45.83 |
| 6 | 7 | Tia Johnson | 12 | S10 | Gates &Whick | 42.79 |
| 7 | 8 | Mwaba Mkwasa | 19 | S8 | Norwich Swan | 42.30 |
| 8 | 9 | Grace Harvey | 26 | S6 | GBR - HODT | 40.31 |
| 9 | 10 | Brooklyn Hale | 14 | S9 | Cockermouth | 40.09 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Cat | Club | Time |
| 0 | 11 | Iona Winnifrith | 13 | S7 | Tonbridge | 40.06 |
| 1 | 12 | Mira Jeanne Maack | 20 | S8 | GERMANY | 37.10 |
| 2 | 13 | Tess Routliffe | 26 | S7 | CANADA | 35.14 |
| 3 | 14 | Suzie Pellis | 17 | S9 | NETHERLANDS | 35.05 |
| 4 | 15 | Imogen Dodds | 15 | S13 | Wellingboro | 34.52 |
| 5 | 16 | Danielle Dorris | 22 | S7 | CANADA | 32.99 |
| 6 | 17 | Florianne Bultje | 26 | S9 | NETHERLANDS | 31.17 |
| 7 | 18 | Sarai Gascon | 32 | S9 | SPAIN | 30.96 |
| 8 | 20 | Elena Krawzow | 31 | S12 | GERMANY | 29.49 |
| 9 | 19 | Lisa Kruger | 24 | S10 | NETHERLANDS | 30.12 |