Top 25 Boys 400m Times of February
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| RANK | TIME | ATHLETE/TEAM | GRADE | MEET DATE PLACE |
|---|---|---|---|---|
| 1 | 50.37 | Milwaukee Speed Academy | 2025 | Louisville Indoor Games 6th F |
| 2 | 50.40 | Milwaukee Speed Academy | 2026 | Louisville Indoor Games 7th F |
| 3 | 51.31 | Milwaukee Speed Academy | 2025 | Louisville Indoor Games 12th F |
| 4 | 51.54 | Milwaukee Speed Academy | 2027 | Louisville Indoor Games 14th F |
| 5 | 51.59 | Milwaukee Speed Academy | 2025 | Louisville Indoor Games 16th F |
| 6 | 52.47 | Milwaukee Mustangs | 2024 | Milwaukee Open Meet #3 1st F |
| 7 | 52.58 | Milwaukee Speed Academy | 2026 | Louisville Indoor Games 21st F |
| 8 | 52.59 | Milwaukee Speed Academy | 2025 | Louisville Indoor Games 22nd F |
| 9 | 52.92 | Milwaukee Speed Academy | 2025 | Milwaukee Open Meet #3 3rd F |
| 10 | 53.42 | Milwaukee Speed Academy | 2024 | Louisville Indoor Games 33rd F |
| 11 | 54.43 | USATF Wisconsin | 2018 | |
| 12 | 54.48 | USATF Wisconsin | 2017 | |
| 13 | 54.55 | Mauston | 2025 | |
| 14 | 54.80 | USATF Wisconsin | 2026 | Milwaukee Open Meet #3 4th F |
| 14 | 54.80 | Unattached - WI | 2026 | Milwaukee Open Meet #3 4th F |
| 16 | 54.85 | Milwaukee Speed Academy | 2023 | Milwaukee Open Meet #3 5th F |
| 17 | 54.93 | Milwaukee Speed Academy | 2025 | Milwaukee Open Meet #3 6th F |
| 18 | 55.63 | New Richmond | 2028 | |
| 19 | 55.66 | Milwaukee Speed Academy | 2027 | Louisville Indoor Games 57th F |
| 20 | 55.73 | Milwaukee Speed Academy | 2025 | Milwaukee Open Meet #3 7th F |
| 21 | 55.75 | Milwaukee Speed Academy | 2024 | Louisville Indoor Games 59th F |
| 22 | 55.92 | Milwaukee Speed Academy | 2024 | Milwaukee Open Meet #3 8th F |
| 23 | 56.10 | USATF Wisconsin | 2025 | Milwaukee Open Meet #3 9th F |
| 23 | 56.10 | Unattached - WI | 2025 | Milwaukee Open Meet #3 9th F |
| 25 | 56.17 | Stallions TC | 2024 |