| Final 21:15 | | time | gap | L | | 100m | 200m | 300m | | 1. Ariarne Titmus |  Australia | 8:13.59s | | GR | 5 | | 2. Kiah Melverton | Australia | 8:16.79s | +3.20s | | 6 | | 3. Lani Pallister | Australia | 8:19.16s | +5.57s | | 4 | | 4. Eve Thomas |  New Zealand | 8:32.63s | +19.04s | | 3 | | 5. Katrina Bellio |  Canada | 8:42.07s | +28.48s | | 7 | | 6. Michaela Pulford |  South Africa | 8:44.77s | +31.18s | | 1 | | 7. Mabel Zavaros | Canada | 8:53.50s | +39.91s | | 2 | | 8. Harper Barrowman |  Cayman Islands | 9:13.97s | +1:00.38 | | 8 |
| 10 Competitors from 6 Nations. Sandwell Aquatics Centre. | | World Record: Katie Ledecky, United States 8:04.79 Rio de Janeiro, Brazil 12 August 2016 | | Commonwealth Record: Ariarne Titmus, Austalia 8:13.83 Tokyo, Japan 31 July 2021 | | Commonwealth Games Record: Jazmin Carlin, Wales 8:18.11 Glasgow, Scotland 28 July 2014 |
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Heats - Monday, 1st August 11:40 | | Best 8 times advanced to Final. |
| Heat 2 10:-- | | time | gap | | L | Rk | 100m | 200m | 300m | | 2. Ariarne Titmus | Australia | 8:36.17s | +4.50s | Q | 4 | 2. | | 4. Kiah Melverton | Australia | 8:40.29s | +7.62s | Q | 5 | 4. | | 6. Katrina Bellio | Canada | 8:42.42s | +9.75s | Q | 3 | 6. | | 7. Michaela Pulford | South Africa | 8:48.84s | +16.21s | Q | 6 | 7. | | 8. Harper Barrowman | Cayman Islands | 9:16.49s | +43.82s | Q | 2 | 8. |
| Heat 1 10:-- | | time | gap | | L | Rk | 100m | 200m | 300m | | 1. Lani Pallister | Australia | 8:32.67s | | Q | 4 | 1. | | 3. Eve Thomas | New Zealand | 8:39.01s | +6.34s | Q | 5 | 3. | | 5. Mabel Zavaros | Canada | 8:40.31s | +7.74s | Q | 3 | 5. | | 9. Lily Scott |  Jersey | 9:27.99s | +55.32s | R | 6 | 9. | | 10.Raya Embury-Brown | Cayman Islands | 9:30.75s | +58.08s | R | 2 | 10. |
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