EVENT 302 Womens Open 400m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 2 | Sophie Traill | 12 | Stockport Mo | 4:44.79 |
| 2 | 4 | Maia Noonan | 13 | Co Birm'ham | 4:44.05 |
| 3 | 6 | Holly Chapman | 13 | RTW Monson | 4:43.02 |
| 4 | 8 | Chloe Burkill | 14 | Sutton Cheam | 4:42.09 |
| 5 | 7 | Sophie Busby | 13 | Derventio | 4:42.25 |
| 6 | 5 | Sasha Long | 13 | Co Leeds | 4:43.73 |
| 7 | 3 | Isla Jones | 12 | Co Sheffield | 4:44.77 |
| 8 | 1 | Bethan Cooke | 12 | Chase | 4:45.40 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 10 | Niamh Hutchinson | 14 | Plymouth Lea | 4:41.81 |
| 1 | 12 | Mia Goodale | 13 | Winchester | 4:41.36 |
| 2 | 14 | Poppy Hogg | 14 | Northampton | 4:40.80 |
| 3 | 16 | Mollie Briggs | 14 | South Lincs | 4:40.38 |
| 4 | 18 | Isobel Hextall | 14 | KingstonHull | 4:40.00 |
| 5 | 17 | Emma Bennett | 14 | RTW Monson | 4:40.16 |
| 6 | 15 | Annabel Russell | 13 | Co Leicester | 4:40.44 |
| 7 | 13 | Ella Osborne | 13 | Exeter City | 4:41.11 |
| 8 | 11 | Josephine Klein | 14 | Exeter City | 4:41.42 |
| 9 | 9 | Holly Lamb | 14 | Southend | 4:41.91 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 20 | Ella Stabler | 15 | York City | 4:39.76 |
| 1 | 22 | Annabel Pilgrim | 13 | Elmbridge | 4:39.73 |
| 2 | 24 | Matilda Bogle | 13 | teamipswich | 4:39.65 |
| 3 | 26 | Ruby Griffiths | 13 | Plymouth Lea | 4:39.47 |
| 4 | 28 | Laura Sharrock | 15 | Bo Of Harrow | 4:39.33 |
| 5 | 27 | Lois Keyes | 15 | Co Liverpool | 4:39.37 |
| 6 | 25 | Emily McWilliam | 14 | Seagulls SC | 4:39.55 |
| 7 | 23 | Yasmine Sheffield | 15 | Leic Sharks | 4:39.72 |
| 8 | 21 | Iona Logan | 13 | Co Leeds | 4:39.75 |
| 9 | 19 | Bethany Abrams | 14 | Mid Sussex | 4:39.78 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 30 | Freya Johnson | 14 | Co Leeds | 4:39.16 |
| 1 | 32 | Harmony Torrington | 15 | Co Derby | 4:39.10 |
| 2 | 34 | Emily Unsworth | 15 | Co Manch Aq | 4:39.01 |
| 3 | 36 | Caitlin Lansom | 14 | Stockport Mo | 4:38.92 |
| 4 | 38 | Grace Conroy | 14 | Co Sheffield | 4:38.79 |
| 5 | 37 | Katie Hale | 14 | Ellesmere Co | 4:38.82 |
| 6 | 35 | Hermione Roe | 14 | Stockport Mo | 4:38.98 |
| 7 | 33 | Alexandra Woodhead | 15 | Bo Kirklees | 4:39.06 |
| 8 | 31 | Zara Beaumont | 13 | Co Hereford | 4:39.11 |
| 9 | 29 | Lucy Dixon | 14 | Co Salford | 4:39.20 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 40 | Lily Scott | 15 | TigersJersey | 4:38.49 |
| 1 | 42 | Lauren Mew | 13 | Barnet Copt | 4:38.22 |
| 2 | 44 | Eleanor Kay | 13 | Bolton Metro | 4:38.20 |
| 3 | 46 | Ruby Knight | 13 | Bo Kirklees | 4:38.16 |
| 4 | 48 | Keira Hancock | 14 | Co Birm'ham | 4:37.82 |
| 5 | 47 | Ashleigh Baillie | 13 | Co Sheffield | 4:37.89 |
| 6 | 45 | Lola Proctor | 15 | Sutton Cheam | 4:38.20 |
| 7 | 43 | Annabel Wilson | 15 | Beckenham | 4:38.20 |
| 8 | 41 | Melody Jones | 16 | Bo Stockton | 4:38.45 |
| 9 | 39 | Ella Blocksidge | 13 | Co Salford | 4:38.74 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 50 | Millie Checkley | 15 | Co Birm'ham | 4:37.28 |
| 1 | 52 | Taylor O'Rourke | 16 | Northampton | 4:37.23 |
| 2 | 54 | Imogen Rhodes | 16 | Ellesmere Co | 4:37.13 |
| 3 | 56 | Katie Hammond | 16 | Co Cambridge | 4:36.74 |
| 4 | 58 | Sophie Murray | 15 | Barnet Copt | 4:36.48 |
| 5 | 57 | Ashleigh Morrow | 15 | Bracknell | 4:36.57 |
| 6 | 55 | Lauren Bradley-Holt | 15 | Co Salford | 4:36.75 |
| 7 | 53 | Charlotte Norman | 14 | teamipswich | 4:37.14 |
| 8 | 51 | Abigail Jackson | 16 | Rotherham Mo | 4:37.25 |
| 9 | 49 | Caitlin Gulliver | 15 | TigersharksW | 4:37.29 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 60 | Kate Haswell | 15 | Derventio | 4:36.43 |
| 1 | 62 | Eve Leleux | 16 | Wrekin Coll | 4:36.31 |
| 2 | 64 | Chloe Quinn | 16 | Nova Cent'n | 4:35.84 |
| 3 | 66 | Erin Hoyland | 16 | Co Manch Aq | 4:35.21 |
| 4 | 68 | Faye Francis | 16 | Portsmouth N | 4:34.63 |
| 5 | 67 | Jennifer Green | 16 | Wigan BEST | 4:34.69 |
| 6 | 65 | Rachel Cornford | 16 | Wycombe Dist | 4:35.62 |
| 7 | 63 | Emily Brook | 15 | Bo Kirklees | 4:36.12 |
| 8 | 61 | Madison Turner | 15 | Skipton | 4:36.38 |
| 9 | 59 | G Moller-Butcher | 16 | Guildford Ct | 4:36.47 |
| Heat Number - 8 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 71 | Amelia Moule | 16 | Romford Town | 4:34.24 |
| 1 | 75 | Keeley Murcott | 17 | Royal Wolv | 4:32.15 |
| 2 | 79 | Scarlett Callaghan | 17 | Beckenham | 4:31.07 |
| 3 | 83 | Katie Thompson | 17 | Amersham | 4:29.77 |
| 4 | 87 | Emma Dickson | 17 | Co Manch Aq | 4:29.28 |
| 5 | 85 | Jessica Podger | 18 | Millfield | 4:29.65 |
| 6 | 81 | Rebecca Flisher | 17 | Nova Cent'n | 4:30.55 |
| 7 | 77 | Tiegan Child | 17 | Beckenham | 4:31.81 |
| 8 | 73 | Molly Colbert | 18 | Nova Cent'n | 4:32.53 |
| 9 | 69 | Emily Preedy | 16 | TigersharksW | 4:34.55 |
| Heat Number - 9 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 72 | Adel Zakrzewski | 16 | Wycombe Dist | 4:34.22 |
| 1 | 76 | Ellie Wheeler | 17 | Basildon Ph | 4:32.10 |
| 2 | 80 | Alice Thickett | 17 | Co Sheffield | 4:30.60 |
| 3 | 84 | Charlotte Walker | 17 | St Felix Sch | 4:29.68 |
| 4 | 88 | Freya Rothery | 15 | Toronto CAN | 4:27.09 |
| 5 | 86 | Jodie Gittins | 17 | Wigan BEST | 4:29.52 |
| 6 | 82 | Amy Pemberton | 18 | Plymouth Lea | 4:30.35 |
| 7 | 78 | Olivia Miles | 17 | Thanet Swim | 4:31.66 |
| 8 | 74 | Caitlin Kilgallen | 17 | Chase | 4:32.49 |
| 9 | 70 | Chloe Hirst | 16 | Bo Kirklees | 4:34.42 |