EVENT 103 Boy 11 Yrs/Over 100m Butterfly - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 1 | Evan LEWIS | 11 | Boston | 1:59.99 |
| 3 | 2 | Maximus BULL | 14 | Ilkeston | 1:36.00 |
| 4 | 3 | Adrian ELERTS | 11 | Grantham | 1:35.56 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 4 | Reuben DOHERTY | 11 | Ilkeston | 1:34.05 |
| 3 | 5 | Riley-Lee BURFORD | 13 | Boston | 1:32.22 |
| 4 | 6 | Zach HOPKINSON | 12 | Grantham | 1:21.60 |
| 5 | 7 | Alex WILSON | 15 | Wisbech | 1:20.43 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 8 | William GRAY | 13 | Grantham | 1:19.40 |
| 2 | 9 | James NICHOLS | 12 | Grantham | 1:17.00 |
| 3 | 10 | Finley O'NEILL | 15 | Ilkeston | 1:16.73 |
| 4 | 11 | Jack ZERAVICA | 13 | Grantham | 1:16.72 |
| 5 | 12 | Louie STADLER | 15 | Ilkeston | 1:16.31 |
| 6 | 13 | Jamie WILSON | 12 | Wisbech | 1:14.01 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 15 | Jacob FISH | 12 | Grantham | 1:12.24 |
| 2 | 17 | Owen HATHWAY | 15 | Grantham | 1:06.93 |
| 3 | 19 | Cade DEAVES | 16 | Grantham | 1:06.00 |
| 4 | 18 | Elijah HALLIDAY | 14 | Grantham | 1:06.76 |
| 5 | 16 | Joshua CLARKE | 13 | Grantham | 1:12.07 |
| 6 | 14 | Ryan NORTON | 14 | Boston | 1:13.70 |