Female - Long Course - 400m Individual Medley - Aberystwyth and District Swimmin - All Time - Open Age Group
| Rank | Name | Ranked Club | YoB | Meet | Date | Time |
|---|---|---|---|---|---|---|
| 1 | Cerian Davies | Aberystwyth | 93 | Welsh New Year Dragon, Swansea | 10/01/09 | 5:09.63 |
| 2 | Cari-Fflur Davies | Aberystwyth | 84 | ASA National Age Group Champs., Coventry | 02/08/99 | 5:18.93 |
| 3 | Elinor Thorogood | Aberystwyth | 92 | Welsh Age & Youth Champs, Swansea | 20/03/08 | 5:26.80 |
| 4 | Lauren Elspeth Harries | Aberystwyth | 93 | Welsh Summer Nationals, Swansea | 31/07/08 | 5:27.40 |
| 5 | Mali Jones | Aberystwyth | 01 | Swim Wales Summer Nationals, Swansea | 03/08/17 | 5:41.00 |
| 6 | Cari O'Rourke | Aberystwyth | 98 | Frome & Wells 3 Towers Open Meet, Millfield | 06/04/14 | 5:58.60 |
| 7 | Nansi Dingle | Aberystwyth | 99 | Frome Autumn Open Meet, Millfield | 25/10/15 | 6:01.09 |
| 8 | Tirion Davies | Aberystwyth | 96 | Welsh Summer Nationals, Swansea | 02/08/09 | 6:04.22 |
| 9 | Sioned Wallwork | Aberystwyth | 01 | Swim Wales Legends Meet, Swansea | 19/09/15 | 6:06.97 |
| 10 | Megan Jones | Aberystwyth | 93 | Tiger Bay Open Meet, Cardiff | 29/03/09 | 6:10.93 |
| 11 | Iyla Berner | Aberystwyth | 13 | Swim Wales Regional Racing Series - West 2024, Swansea | 10/02/24 | 6:14.34 |
| 12 | Alaw O'Rourke | Aberystwyth | 00 | Frome Autumn Open Meet, Millfield | 26/10/14 | 6:15.42 |
| 13 | Talesia Janes | Aberystwyth | 99 | Swim Wales Open New Year Meet, Swansea | 10/01/15 | 6:18.35 |
| 14 | Cari Harries | Aberystwyth | 97 | Welsh Nationals & Schools, Swansea | 21/11/08 | 6:19.04 |
| 15 | Holly-Ellice Jones | Aberystwyth | 05 | Swansea Aquatics Long Course Spring Meet, Swansea | 25/02/18 | 6:26.52 |
| 16 | Tirion Sherman Higgs | Aberystwyth | 07 | Swansea Aquatics Spring Long Course 2019, WNPS | 17/02/19 | 6:46.83 |
| 17 | Shannon Sayer | Aberystwyth | 00 | British Gas Swim Wales Legends Meet, Swansea | 21/09/13 | 7:03.77 |
| 18 | Victoria Szmigiero | Aberystwyth | 09 | Tiger Bay Open Meet 2023, Cardiff | 18/03/23 | 7:05.72 |
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