 | 400m femenino con 16 años |
| Tiempo | Nadador | Año | Localización |
| 05:02.01 | Sofía C. González | 2022 | SABADELL |
| 05:04.90 | Sofía C. González | 2022 | SABADELL |
| 05:11.03 | Sofía C. González | 2022 | PALMA DE MALLORCA |
| 05:11.74 | Sofía C. González | 2022 | Rosario Dueñas |
| 05:12.18 | Sofía C. González | 2022 | SANTA OLAYA |
| 05:17.16 | Sofía C. González | 2022 | SANTA OLAYA |
| 05:18.36 | Sofía C. González | 2022 | MÁLAGA |
| 05:20.08 | Naroa Estévez Montes | 2024 | ROSARIO DUEÑAS |
| 05:20.17 | Naroa Estévez Montes | 2024 | Rosario Dueñas |
| 05:21.54 | Andrea D. Casabella | 2019 | MADRID |
| 05:30.41 | Uxia González Covelo | 2022 | ROSARIO DUEÑAS |
| 05:34.21 | Irene Fernández Pardo | 2017 | GIJON |
| 05:35.95 | Uxia González Covelo | 2022 | ROSARIO DUEÑAS |
| 05:38.10 | Uxia González Covelo | 2022 | SANTA OLAYA |
| 05:42.17 | Uxia González Covelo | 2022 | ROSARIO DUEÑAS |