 | 400m femenino con 12 años |
| Tiempo | Nadador | Año | Localización |
| 05:34.65 | Iria G. Lemos Fernández | 2018 | RÍASDOSUR |
| 05:41.36 | Carla Faro Martínez | 2015 | PONTEVEDRA |
| 05:42.62 | Carla Faro Martínez | 2015 | CACERES |
| 05:44.69 | Carla Faro Martínez | 2015 | Ponteareas |
| 05:51.12 | Iria G. Lemos Fernández | 2018 | RÍASDOSUR |
| 05:54.23 | Naroa Estévez Montes | 2020 | SANTA ISABEL |
| 05:55.09 | Inés Borge Juste | 2018 | RÍASDOSUR |
| 05:59.14 | Angela Cobelo Represas | 2016 | RÍASDOSUR |
| 06:02.40 | Zaira Vila Rial | 2023 | Rías do Sur |
| 06:03.29 | Laura Blanco Pérez | 2016 | RÍASDOSUR |
| 06:03.43 | Angela Cobelo Represas | 2016 | RIASDOSUR |
| 06:04.42 | Eva Resille Santomé | 2018 | RÍASDOSUR |
| 06:05.15 | Naroa Estévez Montes | 2020 | ÁLVARO PINO |
| 06:07.15 | Andrea D. Casabella | 2015 | PONTEVEDRA |
| 06:07.42 | Naiara Eijo Gil | 2018 | RÍAS DO SUR |
| 06:08.77 | Sofía C. González | 2018 | RÍASDOSUR |
| 06:10.83 | Sara Ibáñez Carrera | 2013 | PONTEAREAS |
| 06:13.60 | Iria González Covelo | 2016 | RÍASDOSUR |
| 06:13.86 | Eva Resille Santomé | 2018 | J.GÓMEZNOYA |
| 06:15.07 | María Quintas Melón | 2022 | MONFORTE |
| 06:15.52 | Laura Blanco Pérez | 2016 | RIASDOSUR |
| 06:18.07 | Flavia García Casal | 2025 | PONTEAREAS |
| 06:18.71 | Mencia Jimenez Mariño | 2011 | VIGO |
| 06:18.93 | Eva Resille Santomé | 2018 | RÍASDOSUR |
| 06:22.42 | Flavia García Casal | 2025 | ÁLVARO PINO |
| 06:23.84 | María Quintas Melón | 2022 | ÁLVARO PINO |
| 06:24.94 | Gara R. da Silva | 2023 | Rías do Sur |
| 06:27.76 | Laia García Vaamonde | 2025 | PONTEAREAS |
| 06:29.77 | Mara B. Francisco | 2025 | ÁLVARO PINO |
| 06:31.58 | Miriam Represas Saavedra | 2015 | PONTEVEDRA |