Not Competing : 6,9,15,23
| | | Heat Number - 1 | | | |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 3 | 1 | Lucy ROWLAND | 97 | Burnley BOBC | 6:07.94 |
| 4 | 3 | Florence THWAITES-MILE | 98 | Stockport Mo | 5:57.59 |
| 5 | 2 | Laura MULLANY | 97 | Stockport Mo | 5:49.38 |
| | | Heat Number - 2 | | | |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 1 | 5 | Kathleen DAWSON | 97 | Warrington W | 5:40.35 |
| 2 | 8 | Olivia ASKEW | 97 | Oldham Aqua | 5:51.66 |
| 3 | 11 | Jennifer KNOWLES | 96 | Co Sheffield | 5:27.51 |
| 4 | 13 | Gabrielle BUTTERWORTH | 96 | SwimTrafford | 5:37.69 |
| 5 | 12 | Freya MITCHELL | 97 | Co Sheffield | 5:37.72 |
| 6 | 10 | Lauren MILLS | 97 | Stockport Mo | 5:27.14 |
| 7 | 7 | Lillie TEW-WEAVER | 96 | Stockport Mo | 5:28.87 |
| 8 | 4 | Sammie-Jo NIGHTINGALE | 97 | Stockport Mo | 5:51.53 |
| | | Heat Number - 3 | | | |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 1 | 16 | Rachel HEESOM | 95 | Warrington W | 5:39.30 |
| 2 | 18 | Megan BERRIDGE | 96 | Nova Cent'n | 5:28.94 |
| 3 | 20 | Karlie STOCKDALE | 95 | Barrow | 5:24.40 |
| 4 | 22 | Eleanor JONES | 93 | Stockport Mo | 5:15.84 |
| 5 | 21 | Heather LAWSON | 95 | SwimTrafford | 5:27.22 |
| 6 | 19 | Savannah SAUNDERS | 95 | Co Salford | 5:24.49 |
| 7 | 17 | Holly MADDEN | 95 | Stockport Mo | 5:13.65 |
| 8 | 14 | Laura BROWN | 94 | Stockport Mo | 5:38.07 |
| | | Heat Number - 4 | | | |
| Lane | Comp.No. | Name | YoB | Club/Country | Time |
| 1 | 25 | Sarah GODDARD | 93 | Stockport Mo | 5:14.30 |
| 2 | 27 | Georgia HOHMANN | 94 | Nova Cent'n | 5:10.18 |
| 3 | 29 | Catherine MARCROFT | 92 | Stockport Mo | 5:04.72 |
| 4 | 31 | Helen MCROBERTS | 91 | Warrender Ba | 5:01.80 |
| 5 | 30 | Sophie PYATT | 95 | Stockport Mo | 5:08.25 |
| 6 | 28 | Natasha HOFTON | 95 | Nova Cent'n | 5:17.87 |
| 7 | 26 | Katie BENNETT | 95 | Satellite | 5:19.07 |
| 8 | 24 | Sophie KENNY | 94 | Oldham Aqua | 5:28.77 |