Most Improved Oregon Boys 400m Marks Compared to 2025

MileSplit Staff

This content requires a MileSplit Pro plan.
Join Now and select any plan for instant access!

MileSplit Pro
Join Now

Improvement Rankings: Top Oregon 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 -6.99 2028 1:05.24 58.25
2 -6.51 2027 1:06.11 59.60
3 -5.83 2028 1:13.12 1:07.29
4 -5.75 2028 1:08.84 1:03.09
5 -5.33 2027 1:01.89 56.56
6 -5.08 2028 1:0...