Most Improved Michigan Boys 400m Marks Compared to 2025

MileSplit Staff
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Improvement Rankings: Top Michigan 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 -7.50 2027 1:12.42 1:04.92
2 -6.98 2027 1:10.78 1:03.80
3 -5.10 2028 1:10.57 1:05.47
4 -5.02 2028 1:07.07 1:02.05
5 -4.59 2027 1:03.57 58.98
6 -4.34