 | 400m femenino con 16 años |
| Tiempo | Nadador | Año | Localización |
| 04:27.14 | Andrea D. Casabella | 2019 | RÍAS DO SUR |
| 04:28.49 | Laura Rodríguez Novoa | 2016 | RÍASDOSUR |
| 04:30.58 | Sofía C. González | 2022 | SABADELL |
| 04:31.26 | Sofía C. González | 2022 | SANTA ISABEL |
| 04:33.03 | Andrea D. Casabella | 2019 | ÁLVARO PINO |
| 04:33.16 | Andrea D. Casabella | 2019 | RÍAS DO SUR |
| 04:33.24 | Andrea D. Casabella | 2019 | RÍAS DO SUR |
| 04:33.99 | Laura Rodríguez Novoa | 2016 | ACAÑIZA |
| 04:34.43 | Laura Rodríguez Novoa | 2016 | FLUVIAL |
| 04:34.81 | Andrea D. Casabella | 2019 | GIJÓN |
| 04:34.95 | Laura Rodríguez Novoa | 2016 | BATALLONES |
| 04:35.19 | Sofía C. González | 2022 | FRIGSA |
| 04:35.99 | Andrea D. Casabella | 2019 | RÍAS DO SUR |
| 04:37.48 | Ana Buceta Lago | 2019 | ÁLVARO PINO |
| 04:38.17 | Andrea D. Casabella | 2019 | CARBALLO CALERO |
| 04:40.12 | Naroa Estévez Montes | 2024 | Álvaro Pino |
| 04:42.26 | Sofía C. González | 2022 | CGTD |
| 04:42.97 | Irene Fernández Pardo | 2017 | SANTIAGO |
| 04:44.08 | Inés Borge Juste | 2022 | CGTD |
| 04:44.51 | Naroa Estévez Montes | 2024 | Álvaro Pino |
| 04:46.67 | Naroa Estévez Montes | 2024 | A FIEITEIRA |
| 04:46.98 | Naroa Estévez Montes | 2024 | CARBALLO CALERO |
| 04:47.79 | Naroa Estévez Montes | 2024 | A FIEITEIRA |
| 04:48.98 | Angela Cobelo Represas | 2020 | AS POZAS |
| 04:52.16 | Aitana Blanco Lage | 2025 | AS POZAS |
| 04:52.83 | Aitana Blanco Lage | 2025 | FELGUEIRAS |
| 05:01.16 | Jennifer C. Domínguez | 2010 | BERGANTIÑOS |
| 05:04.63 | Mencia Jimenez Mariño | 2015 | Ponteareas |
| 05:04.94 | Laura Costa Fernández | 2017 | SANTIAGO |
| 05:08.55 | Iria González Covelo | 2020 | RÍAS DO SUR |