Most Improved Arizona Boys 400m Marks Compared to 2025

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Improvement Rankings: Top Arizona 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 -17.57 2028 1:31.31 1:13.74
2 -13.00 2028 1:12.94 59.94
3 -12.70 2028 1:13.61 1:00.91
4 -12.68 2026 1:07.44 54.76
5 -11.44 2027 1:03.20 51.76
6 -10.90 ...