 | 400m femenino con 12 años |
| Tiempo | Nadador | Año | Localización |
| 05:00.56 | Iria G. Lemos Fernández | 2018 | RÍASDOSUR |
| 05:02.47 | Andrea D. Casabella | 2015 | RCNV |
| 05:07.06 | Naroa Estévez Montes | 2020 | SANTA ISABEL |
| 05:07.07 | Irene Fernández Pardo | 2013 | VIGO (RCN) |
| 05:08.38 | Carla Faro Martínez | 2015 | Pontevedra |
| 05:13.63 | Zaira Vila Rial | 2023 | RCNV |
| 05:13.87 | Angela Cobelo Represas | 2016 | RIASDOSUR |
| 05:14.30 | Andrea D. Casabella | 2015 | Pontevedra |
| 05:15.01 | Sara Ibáñez Carrera | 2013 | PONTEVEDRA |
| 05:18.16 | Sofía C. González | 2018 | RÍASDOSUR |
| 05:18.49 | Irene Fernández Pardo | 2013 | PONTEVEDRA |
| 05:22.00 | Sara Ibáñez Carrera | 2013 | RÍAS DO SUR |
| 05:22.98 | Uxia González Covelo | 2018 | RÍAS DO SUR |
| 05:23.02 | Sofía C. González | 2018 | RÍAS DO SUR |
| 05:24.47 | Zaira Vila Rial | 2023 | RCNV |
| 05:25.17 | Inés Borge Juste | 2018 | J.GÓMEZNOYA |
| 05:27.38 | Mencia Jimenez Mariño | 2011 | PONTEAREAS |
| 05:29.52 | Eva Resille Santomé | 2018 | RÍASDOSUR |
| 05:29.84 | Angela Cobelo Represas | 2016 | SANTA ISABEL |
| 05:29.97 | Laura Rodríguez Novoa | 2012 | RIAS DO SUR |
| 05:30.51 | Andrea D. Casabella | 2015 | Ponteareas |
| 05:31.59 | María Quintas Melón | 2022 | AS POZAS |
| 05:32.02 | Laura Rodríguez Novoa | 2012 | SANTA ISABEL |
| 05:33.43 | Iria González Covelo | 2016 | RIASDOSUR |
| 05:34.77 | María Quintas Melón | 2022 | AS TRAVESAS |
| 05:35.13 | Sofía C. González | 2018 | RÍAS DO SUR |
| 05:35.23 | María Seijo Marques | 2022 | AS TRAVESAS |
| 05:35.30 | Naiara Eijo Gil | 2018 | RÍAS DO SUR |
| 05:35.61 | Sofía C. González | 2018 | ÁlvaroPino |
| 05:36.17 | Miriam Represas Saavedra | 2015 | Pontevedra |