Most Improved District of Columbia Boys 400m Marks Compared to 2025

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Improvement Rankings: Top District of Columbia Boys 400m marks compared to their season’s best performances from 2025.

Most Improved - 400 Meter Dash

Comparing 2026 season to 2025 season

...
Rank Improved Athlete/Team Class 2025 PR 2026 PR
1 -5.30 2027 1:00.13 54.83
2 -3.79 2028 1:00.69 56.90
3 -3.14 2026 56.02 52.88
4 -2.82 2027 57.35 54.53
5 -2.23 2027 58.80 56.57
6 -1.53