 | 400m femenino con 17 años |
| Tiempo | Nadador | Año | Localización |
| 04:09.16 | Carla Carrón Muiña | 2022 | SABADELL |
| 04:11.69 | Carla Carrón Muiña | 2022 | SABADELL |
| 04:23.01 | Carla Carrón Muiña | 2022 | FRIGSA |
| 04:29.64 | Carla Faro Martínez | 2020 | ÁLVARO PINO |
| 04:31.69 | Laura Rodríguez Novoa | 2017 | SANTAISABEL |
| 04:32.03 | Laura Rodríguez Novoa | 2017 | AGÁNDARA |
| 04:34.71 | Laura Rodríguez Novoa | 2017 | SANTA ISABEL |
| 04:35.29 | Laura Rodríguez Novoa | 2017 | SANTA ISABEL |
| 04:35.65 | Ana Buceta Lago | 2020 | AS POZAS |
| 04:36.11 | Laura Rodríguez Novoa | 2017 | BATALLONES |
| 04:36.95 | Laura Rodríguez Novoa | 2017 | SANTA ISABEL |
| 04:40.56 | Laura Rodríguez Novoa | 2017 | FRIGSA |
| 04:41.86 | Andrea D. Casabella | 2020 | ÁLVARO PINO |
| 04:42.76 | Naroa Estévez Montes | 2025 | ÁLVARO PINO |
| 04:42.92 | Carla Faro Martínez | 2020 | RÍAS DO SUR |
| 04:44.48 | Naroa Estévez Montes | 2025 | ÁLVARO PINO |
| 04:46.11 | Naroa Estévez Montes | 2025 | FRIGSA |
| 04:46.55 | Sofía C. González | 2023 | RÍAS DO SUR |
| 04:46.90 | Andrea D. Casabella | 2020 | RÍAS DO SUR |
| 04:53.31 | Inés Borge Juste | 2023 | AS POZAS |
| 04:55.39 | Iria González Covelo | 2021 | RÍAS DO SUR |
| 05:06.39 | Sara Ibáñez Carrera | 2018 | RCNV |
| 05:06.90 | Sara Ibáñez Carrera | 2018 | XOVE |
| 05:08.20 | Estefania C. Dominguez | 2010 | AS PEDREIRAS |