| Place | Name | AaD | Club | Time | FINA Pt | ||||
| 1. | Ashton HUNTER | 9 | Deepings | 37.33 | 157 | ||||
| 2. | Joshua OWEN | 9 | Melton M'bry | 40.69 | 121 | ||||
| 3. | Oliver CLARKE | 9 | Deepings | 41.59 | 113 | ||||
| 4. | Zak BATES | 9 | Melton M'bry | 46.30 | 82 | ||||
| 5. | Isacc DONALDSON | 9 | Deepings | 55.50 | 47 | ||||
| 6. | Benjamin GODDARD | 9 | Grantham | 57.56 | 42 | ||||
| 7. | Elliot GLEAVE | 9 | Grantham | 1:02.43 | 33 | ||||
| Morgan BROWN | 9 | Grantham | DNC |
| Place | Name | AaD | Club | Time | FINA Pt | ||||
| 1. | James HUCKLE | 10 | Lincoln Vulc | 35.37 | 185 | ||||
| 2. | Robbie DUFF | 10 | Lincoln Vulc | 36.01 | 175 | ||||
| 3. | Noah DEWSNAP | 10 | Retford | 37.07 | 160 | ||||
| 4. | Zachary WILSON | 10 | Lincoln Vulc | 38.83 | 139 | ||||
| 5. | Samuel NICHOLS | 10 | Grantham | 41.68 | 113 | ||||
| 6. | Corey HESTLETINE | 10 | Retford | 41.77 | 112 | ||||
| 7. | Kai WATSON | 10 | Deepings | 41.93 | 111 | ||||
| 8. | Luca HALLAM | 10 | Grantham | 41.95 | 110 | ||||
| 9. | Jonathan GBYLICZEK | 10 | Lincoln Vulc | 42.84 | 104 | ||||
| 10. | Daniel HUNT | 10 | Grantham | 43.67 | 98 | ||||
| 11. | Seth NEWTON | 10 | Grantham | 44.63 | 92 | ||||
| 12. | Finley WEST | 10 | Co Lincoln P | 47.87 | 74 |
| Place | Name | AaD | Club | Time | FINA Pt | ||||
| 1. | Samuel GREEN | 11 | Retford | 30.95 | 276 | ||||
| 2. | Riley HAMER | 11 | Co Lincoln P | 33.42 | 219 | ||||
| 3. | James CASH | 11 | Deepings | 33.63 | 215 | ||||
| 4. | Reuben MEADOWS | 11 | Retford | 34.47 | 200 | ||||
| 5. | Thomas COLLINS | 11 | Retford | 34.58 | 198 | ||||
| 6. | Jacob GIFFORD | 11 | Lincoln Vulc | 35.28 | 186 | ||||
| 7. | Jude BOUCH | 11 | Melton M'bry | 36.63 | 166 | ||||
| 8. | Theo BACON | 11 | Grantham | 37.07 | 160 | ||||
| 9. | Joel SADLER | 11 | Grantham | 37.36 | 157 | ||||
| 10. | Austin HUNT | 11 | Melton M'bry | 38.00 | 149 | ||||
| 11. | Loui MAYNE | 11 | Melton M'bry | 38.91 | 139 | ||||
| 12. | Bobby THAIN | 11 | Skegness | 39.23 | 135 | ||||
| 13. | Connor SMITH | 11 | Grantham | 41.28 | 116 | ||||
| 14. | Ethan DERBY | 11 | Lincoln Vulc | 41.49 | 114 | ||||
| 15. | Tristan EKE | 11 | Co Lincoln P | 41.85 | 111 | ||||
| 16. | Michael BUNN | 11 | Lincoln Vulc | 43.24 | 101 | ||||
| 17. | Noah SKINNER | 11 | Deepings | 46.40 | 82 | ||||
| 18. | Thomas BURDOCK | 11 | Deepings | 48.60 | 71 | ||||
| George GRIFFITHS | 11 | Melton M'bry | DNC | ||||||
| Jake HOLLIDAY | 11 | Retford | DNC | ||||||
| Charlie BARKER | 11 | Deepings | DNC | ||||||
| Matt HALL | 11 | Deepings | DNC | ||||||
| Fabian KOLASA | 11 | Grantham | DNC |
| Place | Name | AaD | Club | Time | FINA Pt | ||||
| 1. | Jacob FISH | 12 | Grantham | 29.19 | 329 | ||||
| 2. | Luke DAYBELL | 12 | Grantham | 32.30 | 243 | ||||
| 3. | C BUTTERELL-QUANBROUGH | 12 | Retford | 32.33 | 242 | ||||
| 4. | Oliver SHEPHERD | 12 | Deepings | 32.53 | 238 | ||||
| 5. | Themba LUNGU | 12 | Lincoln Vulc | 33.17 | 224 | ||||
| 6. | Adrian ELERTS | 12 | Grantham | 35.05 | 190 | ||||
| 7. | Romeo PAYNE | 12 | Melton M'bry | 35.25 | 187 | ||||
| 8. | William BURDOCK | 12 | Deepings | 35.95 | 176 | ||||
| 9. | Oliver GARNER | 12 | Co Lincoln P | 37.11 | 160 | ||||
| 10. | Lewis SNOWSHALL | 12 | Lincoln Vulc | 37.58 | 154 | ||||
| 11. | Harrison DEE | 12 | Skegness | 37.71 | 152 | ||||
| 12. | Matas RABASAUSKAS | 12 | Grantham | 38.30 | 145 | ||||
| 13. | Reece TOMPSETT | 12 | Skegness | 40.03 | 127 | ||||
| 14. | Oliver TEE | 12 | Melton M'bry | 43.08 | 102 | ||||
| 15. | Kieron TOMS | 12 | Deepings | 49.04 | 69 | ||||
| Oscar DUTTON-LEE | 12 | Grantham | DNC | ||||||
| Ben CARLYLE | 12 | Grantham | DNC | ||||||
| Robert WASHBROOK | 12 | Lincoln Vulc | DQ ST |