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 -23.75 2027 1:22.18 58.43
2 -21.80 2028 1:24.80 1:03.00
3 -20.88 2027 1:19.21 58.33
4 -19.68 2027 1:20.75 1:01.07
5 -18.21 2026 1:17.27 59.06
6 -16.65