EVENT 604 Female 13/15 Yrs 400m IM - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 2 | Lacey Broadway | 14 | Wellingboro | 6:57.20 |
| 2 | 4 | Ellie Smith | 14 | Corby | 6:32.68 |
| 3 | 6 | Zoe Larmour | 14 | Daventry | 6:19.50 |
| 4 | 8 | Isla Adams | 13 | Northampton | 6:15.13 |
| 5 | 7 | Georgina Beeby | 15 | Kettering | 6:16.90 |
| 6 | 5 | Emma Affleck | 15 | Kettering | 6:30.31 |
| 7 | 3 | Lily Fulford | 15 | Daventry | 6:41.70 |
| 8 | 1 | Emma Chamberlain | 13 | Wellingboro | 7:14.00 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 10 | Isabelle Pawlowski | 14 | Corby | 5:46.20 |
| 2 | 12 | Beth Rebhan | 15 | Corby | 5:40.50 |
| 3 | 14 | Kimberley Hayes | 15 | Northampton | 5:33.19 |
| 4 | 16 | Phillippa Cutmore | 14 | Corby | 5:21.40 |
| 5 | 15 | Elisa Giraud | 14 | Corby | 5:32.10 |
| 6 | 13 | Vida Coulson | 13 | Northampton | 5:40.00 |
| 7 | 11 | Martha Blake | 14 | Corby | 5:44.90 |
| 8 | 9 | Georgia Parker | 15 | Corby | 5:59.30 |