EVENT 101 Men 1500m Freestyle - Heats
| Heat Number - 1 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 3 | 2 | Jai Diddee | 08 | N & D PP SC | 17:19.67 |
| 4 | 4 | Joseph Hall | 08 | Co Leeds | 17:14.34 |
| 5 | 3 | Oscar Chirnside | 08 | Garioch | 17:19.49 |
| 6 | 1 | Oscar Goldsmith | 08 | South Lincs | 17:22.52 |
| Heat Number - 2 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 0 | 6 | Oliver Greaves | 07 | Wrekin SC | 17:11.21 |
| 1 | 8 | Valerio Thompson | 07 | Millfield | 17:10.21 |
| 2 | 10 | Jonathan Thring | 07 | Seagulls SC | 17:08.76 |
| 3 | 12 | Aidan Turner | 09 | Newcastle | 17:07.63 |
| 4 | 14 | Findlay Cordle | 07 | Repton | 17:07.37 |
| 5 | 13 | Elliot Lawton | 08 | Co Coventry | 17:07.55 |
| 6 | 11 | Daniel Belsey | 08 | Hatfield | 17:08.52 |
| 7 | 9 | Patch Robinson | 07 | teamipswich | 17:09.11 |
| 8 | 7 | Patrick Neill | 08 | Co Leeds | 17:10.31 |
| 9 | 5 | Jack Collins | 08 | Co Sheffield | 17:12.79 |
| Heat Number - 3 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 0 | 16 | James Page | 07 | Co Birm'ham | 17:06.44 |
| 1 | 18 | Ethan Ellis-Sixsmith | 03 | Co Sheffield | 17:03.82 |
| 2 | 20 | Ethan Potter | 08 | Co Sheffield | 16:58.75 |
| 3 | 22 | Thomas Jennings | 08 | Portsmouth N | 16:58.61 |
| 4 | 24 | Benjamin Ross | 08 | Co Salford | 16:57.23 |
| 5 | 23 | Tom Hawkins | 07 | RTW Monson | 16:58.04 |
| 6 | 21 | Jack Bamborough | 08 | Co Cardiff | 16:58.63 |
| 7 | 19 | Samuel Grimes | 06 | Wigan BEST | 17:00.36 |
| 8 | 17 | Finlay Chapman | 01 | Co Sheffield | 17:05.40 |
| 9 | 15 | Harry Pearse | 08 | Mt Kelly | 17:07.32 |
| Heat Number - 4 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 0 | 26 | Ben McLaughlin | 06 | Garioch | 16:56.46 |
| 1 | 28 | Luke Moore | 07 | Leatherhead | 16:55.97 |
| 2 | 30 | Joshua Keogh | 08 | Bolton Metro | 16:55.41 |
| 3 | 32 | Hubert Gdaniec | 04 | Mt Kelly | 16:54.27 |
| 4 | 34 | Archie Neaves | 05 | Co Leicester | 16:51.37 |
| 5 | 33 | Tom McCabe | 05 | Stockport Mo | 16:52.61 |
| 6 | 31 | Adam Wright | 06 | Winsford | 16:54.98 |
| 7 | 29 | Todd Flynn | 06 | Epsom Dist | 16:55.78 |
| 8 | 27 | Luca Staines | 04 | Swansea Uni | 16:56.05 |
| 9 | 25 | Benjamin Gibbons | 07 | Northampton | 16:56.78 |
| Heat Number - 5 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 0 | 36 | Daniel McGuinness | 06 | Basildon Ph | 16:51.17 |
| 1 | 38 | Daniel Walker | 07 | Nova Cent'n | 16:50.75 |
| 2 | 40 | Raheel Mahmood | 07 | Romford Town | 16:48.81 |
| 3 | 42 | Hayden Annan | 07 | RTW Monson | 16:47.53 |
| 4 | 44 | Samuel Williams | 07 | Wycombe Dist | 16:45.58 |
| 5 | 43 | Connor Hartley | 05 | Co Salford | 16:46.96 |
| 6 | 41 | Lawrence Elliott | 05 | Seagulls SC | 16:47.86 |
| 7 | 39 | Ivan Hart | 06 | Millfield | 16:50.66 |
| 8 | 37 | Matthew Monie | 05 | Co Cambridge | 16:51.00 |
| 9 | 35 | Adam McCauley-Wright | 07 | Portsmouth N | 16:51.25 |
| Heat Number - 6 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 0 | 46 | Reece Blackett | 06 | Newcastle | 16:45.19 |
| 1 | 48 | Ben Merriman | 05 | Torfaen D | 16:44.01 |
| 2 | 50 | George Daintith | 08 | Warrington W | 16:41.85 |
| 3 | 52 | Joseph Kingsland | 03 | Nova Cent'n | 16:41.45 |
| 4 | 54 | Ethan Kelly | 08 | Co Liverpool | 16:38.14 |
| 5 | 53 | Max Russell | 06 | Co Sheffield | 16:38.45 |
| 6 | 51 | Thomas Belt | 08 | Plymouth Lea | 16:41.70 |
| 7 | 49 | James Kaye | 05 | Barnet Copt | 16:42.86 |
| 8 | 47 | Samuel Lander | 06 | Mt Kelly | 16:44.19 |
| 9 | 45 | Luke Poulton | 06 | Wycombe Dist | 16:45.21 |
| Heat Number - 7 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 0 | 56 | Kyle Offer | 04 | Co Coventry | 16:37.06 |
| 1 | 58 | Finlay Pope | 07 | Stockport Mo | 16:36.65 |
| 2 | 60 | Jack Rudd | 04 | Maidenhead | 16:33.81 |
| 3 | 62 | George Pearson | 06 | Wycombe Dist | 16:33.36 |
| 4 | 64 | Matthew Warburton | 05 | Warrington W | 16:29.91 |
| 5 | 63 | Finn Drysdale | 05 | Royal Wolv | 16:30.65 |
| 6 | 61 | Cameron Carlos | 05 | Barnet Copt | 16:33.69 |
| 7 | 59 | Joseph Moment | 06 | KingstonHull | 16:35.74 |
| 8 | 57 | Daniel English | 02 | Birm'ham Uni | 16:36.93 |
| 9 | 55 | Dante Sinnott | 07 | Barnet Copt | 16:37.91 |
| Heat Number - 8 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 0 | 66 | Thomas Sansome | 03 | Lboro Uni | 16:26.92 |
| 1 | 68 | Archie Hawkins | 05 | Thanet Swim | 16:25.90 |
| 2 | 70 | Luke Hornsey | 06 | East Lothian | 16:23.20 |
| 3 | 72 | Josh Denholm | 05 | Newcastle | 16:17.74 |
| 4 | 74 | Joseph Stout | 05 | Co Salford | 16:16.81 |
| 5 | 73 | Daniel Cox | 04 | Wycombe Dist | 16:17.44 |
| 6 | 71 | Samuel Sterry | 07 | TigersJersey | 16:19.17 |
| 7 | 69 | Oliver Rowe | 06 | Mt Kelly | 16:24.12 |
| 8 | 67 | Scott Fleming | 06 | Eastkilbride | 16:26.77 |
| 9 | 65 | Rafae Shafi | 05 | Repton | 16:26.93 |
| Heat Number - 9 |
| Lane | Comp.No. | Name | YoB | Club | Time |
| 0 | 76 | Jack Muncey | 03 | UniOfStirl | 16:06.70 |
| 1 | 78 | Luke McGee | 06 | N & D PP SC | 15:59.79 |
| 2 | 80 | Thomas Trebilcock | 03 | Swansea Uni | 15:46.87 |
| 3 | 82 | Alexander Sargeant | 02 | Millfield | 15:34.52 |
| 4 | 84 | Tobias Robinson | 96 | Lboro Uni | 15:04.76 |
| 5 | 83 | Nathan Hughes | 00 | Swansea Uni | 15:29.63 |
| 6 | 81 | Joseph Deighan | 03 | Swansea Uni | 15:46.77 |
| 7 | 79 | Cameron Travis | 04 | UoAPS | 15:59.76 |
| 8 | 77 | Alexander Volkovoy | 05 | Co Salford | 16:05.87 |
| 9 | 75 | Christian Duetoft | 05 | Guildford Ct | 16:07.26 |