| Heat Number - 1 | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 2 | 2 | Adrian ELERTS | 12 | Grantham | |
| 3 | 3 | Luke DAYBELL | 13 | Grantham | 6:48.70 |
| 4 | 4 | James NICHOLS | 13 | Grantham | 6:19.40 |
| 5 | 5 | Zach HOPKINSON | 13 | Grantham | 5:50.08 |
| Heat Number - 2 | |||||
| Lane | Comp.No. | Name | AaD | Club | Time |
| 1 | 7 | Daniel DEGNAN | 14 | Grantham | 5:32.25 |
| 2 | 9 | Owen HATHWAY | 16 | Grantham | 5:03.37 |
| 3 | 11 | James DOBNEY | 18 | Grantham | 4:48.43 |
| 4 | 10 | Samuel LEVERIDGE | 16 | Grantham | 4:57.52 |
| 5 | 8 | Jacob FISH | 13 | Grantham | 5:26.97 |
| 6 | 6 | Jack ZERAVICA | 14 | Grantham | 5:48.90 |