EVENT 112 Womens Open 400m IM - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 1 | 2 | Eleanor Kay | 13 | Bolton Metro | 5:22.63 |
| 2 | 4 | Megan Adamson | 16 | Calne Alpha | 5:21.60 |
| 3 | 6 | Amelia Stevenson | 14 | Bassetlaw SS | 5:21.54 |
| 4 | 8 | Lucy Turner | 14 | Burnley BOBC | 5:21.40 |
| 5 | 7 | Eja Coe | 13 | Derventio | 5:21.47 |
| 6 | 5 | Olivia Lee | 15 | Co Peterboro | 5:21.57 |
| 7 | 3 | Megan Speirs | 15 | Lincoln Vulc | 5:21.61 |
| 8 | 1 | Annabel Russell | 13 | Co Leicester | 5:22.65 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 10 | Bethany Abrams | 14 | Mid Sussex | 5:21.30 |
| 1 | 12 | Olivia Hidayat | 13 | Co Leeds | 5:21.13 |
| 2 | 14 | Alicia Corver | 15 | Bromley | 5:20.96 |
| 3 | 16 | Hannah Pettener | 15 | Wirral Metro | 5:20.87 |
| 4 | 18 | Jessica Owen | 14 | Co Leicester | 5:20.65 |
| 5 | 17 | Bobbi Harper | 14 | Northampton | 5:20.67 |
| 6 | 15 | Anna Stansfield | 16 | Leatherhead | 5:20.94 |
| 7 | 13 | Claudia Ashford | 15 | S Bournem'th | 5:21.12 |
| 8 | 11 | Holly Robinson | 14 | Mt Kelly | 5:21.16 |
| 9 | 9 | Olivia Sheehan | 14 | Wigan BEST | 5:21.35 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 20 | Anna Ashcroft | 12 | Co Leeds | 5:20.24 |
| 1 | 22 | Ella Osborne | 13 | Exeter City | 5:19.84 |
| 2 | 24 | Harriet Salisbury | 15 | Co Peterboro | 5:19.58 |
| 3 | 26 | Megan Smit | 16 | Co Oxford | 5:19.52 |
| 4 | 28 | Sienna Ho-Shing | 14 | Co Leeds | 5:19.20 |
| 5 | 27 | Chloe Burkill | 14 | Sutton Cheam | 5:19.32 |
| 6 | 25 | Emilie Gulliver | 15 | TigersharksW | 5:19.52 |
| 7 | 23 | Aimie Quarrie | 15 | Poole | 5:19.69 |
| 8 | 21 | Lucy Dixon | 14 | Co Salford | 5:20.22 |
| 9 | 19 | Ciara Wookey | 15 | Colchester | 5:20.59 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 30 | Izzy Hobson-Corbett | 14 | Bassetlaw SS | 5:19.12 |
| 1 | 32 | Matilda Ransome | 13 | Co Cambridge | 5:18.95 |
| 2 | 34 | Sasha Long | 13 | Co Leeds | 5:18.44 |
| 3 | 36 | Eliza Pinkstone | 14 | Stockport Mo | 5:18.24 |
| 4 | 38 | Christa Wilson | 16 | Newcastle | 5:17.84 |
| 5 | 37 | Ashleigh Baillie | 13 | Co Sheffield | 5:17.89 |
| 6 | 35 | Ruby Griffiths | 13 | Plymouth Lea | 5:18.30 |
| 7 | 33 | Iona Logan | 13 | Co Leeds | 5:18.67 |
| 8 | 31 | Hannah Buick | 16 | Chase | 5:18.97 |
| 9 | 29 | Madeline Powell | 16 | Co Oxford | 5:19.16 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 40 | Millie Gidman | 15 | Wirral Metro | 5:17.71 |
| 1 | 42 | Olivia Martin | 13 | Scunthorpe A | 5:17.49 |
| 2 | 44 | Freya Johnson | 14 | Co Leeds | 5:17.09 |
| 3 | 46 | Leah Evans | 14 | Co Bristol | 5:16.64 |
| 4 | 48 | Erin Jones | 16 | Co Coventry | 5:16.39 |
| 5 | 47 | Emily Brook | 15 | Bo Kirklees | 5:16.54 |
| 6 | 45 | Hannah Poulter | 16 | Brighton | 5:17.02 |
| 7 | 43 | Katie Hale | 14 | Ellesmere Co | 5:17.14 |
| 8 | 41 | G Moller-Butcher | 16 | Guildford Ct | 5:17.50 |
| 9 | 39 | Martha Callaghan | 13 | Co Leeds | 5:17.77 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 50 | Jodie Dilks | 14 | Tiverton | 5:16.08 |
| 1 | 52 | Mya Watt | 15 | Derventio | 5:15.89 |
| 2 | 54 | Ruby Wheeler | 13 | Basildon Ph | 5:15.80 |
| 3 | 56 | Alicia Clark | 13 | Bassetlaw SS | 5:15.55 |
| 4 | 58 | Tia Keightley | 15 | Co Leicester | 5:15.01 |
| 5 | 57 | Orla Keaveney | 16 | Modernian | 5:15.39 |
| 6 | 55 | Isla Williams | 13 | Co Leeds | 5:15.58 |
| 7 | 53 | Lara Turner | 14 | Co Bristol | 5:15.83 |
| 8 | 51 | Annabelle Wilkinson | 14 | Co Sheffield | 5:15.94 |
| 9 | 49 | Jess Prokas | 14 | Cockermouth | 5:16.30 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 60 | Lois Keyes | 15 | Co Liverpool | 5:15.00 |
| 1 | 62 | Lucie Peck | 16 | West Norfolk | 5:14.75 |
| 2 | 64 | Hannah Newnham | 16 | Donc Dartes | 5:14.09 |
| 3 | 66 | Rachel Cornford | 16 | Wycombe Dist | 5:14.09 |
| 4 | 68 | Sophie Traill | 12 | Stockport Mo | 5:13.85 |
| 5 | 67 | Megan Vingoe | 17 | Carn Brea | 5:14.02 |
| 6 | 65 | Charlotte Johnson | 16 | Mid Sussex | 5:14.09 |
| 7 | 63 | Madison Turner | 15 | Skipton | 5:14.36 |
| 8 | 61 | Harriet Smith | 15 | Wrekin Coll | 5:14.86 |
| 9 | 59 | Ellisha Cookson | 15 | South Lincs | 5:15.01 |
| Heat Number - 8 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 71 | Natasha Utley | 17 | Bassetlaw SS | 5:13.28 |
| 1 | 75 | Victoria Dawson | 17 | Southport | 5:12.10 |
| 2 | 79 | Mia Leech | 17 | Co Peterboro | 5:11.62 |
| 3 | 83 | Marise Garbutt | 17 | Donc Dartes | 5:10.21 |
| 4 | 87 | Rebecca Flisher | 17 | Nova Cent'n | 5:08.56 |
| 5 | 85 | Molly Francis | 18 | Mt Kelly | 5:09.05 |
| 6 | 81 | Anya Preece | 16 | Wrekin Coll | 5:11.43 |
| 7 | 77 | Grace King | 16 | teamipswich | 5:11.93 |
| 8 | 73 | Freya Stevens | 18 | Northampton | 5:12.79 |
| 9 | 69 | Alexandra Bartley | 17 | Royal Wolv | 5:13.81 |
| Heat Number - 9 |
| Lane | Comp.No. | Name | AaD | Club/Country | Time |
| 0 | 72 | Ana Vicary | 18 | Co Coventry | 5:13.19 |
| 1 | 76 | Avani Gill | 17 | Wycombe Dist | 5:12.04 |
| 2 | 80 | Evie Johns | 17 | Co Hereford | 5:11.46 |
| 3 | 84 | Celyn Walmsley | 18 | Team Luton | 5:10.11 |
| 4 | 88 | Isobel Hume | 17 | Northampton | 5:08.30 |
| 5 | 86 | Olivia Miles | 17 | Thanet Swim | 5:08.93 |
| 6 | 82 | Abigail Lacey | 17 | Portsmouth N | 5:11.25 |
| 7 | 78 | Caitlin Kilgallen | 17 | Chase | 5:11.92 |
| 8 | 74 | Lily Merrett | 16 | Co St Albans | 5:12.51 |
| 9 | 70 | Natalie Sanford | 15 | St Felix Sch | 5:13.57 |