Top 10 WI Boys Indoor 400 Meter Dash Times - All-Time
| RANK | TIME | ATHLETE/TEAM | GRADE | MEET DATE PLACE |
|---|---|---|---|---|
| 1 | 47.97 | Milwaukee Speed Academy | 2023 | Louisville Indoor Games 1st F |
| 2 | 48.17 | Wild Rose | 2021 | |
| 3 | 48.42 | Oak Creek | 2016 | |
| 4 | 48.72 | Rice Lake | 2018 | |
| 5 | 48.99 | Unattached - WI | 2023 | |
| 6 | 49.06 | Milwaukee Speed Academy | 2023 | New Balance Nationals Indoor 39th P |
| 7 | 49.24 | Catholic Memorial | 2013 | |
| 8 | 49.49 | Westosha Central | 2022 | |
| 9 | 49.52 | Milwaukee Mustangs | 2020 | |
| 10 | 49.73 | Oconomowoc | 2021 |