Most Improved National Boys 300m Marks Compared to 2025

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Improvement Rankings: Top National Boys 300m marks compared to their season’s best performances from 2025.

Most Improved - 300m

Comparing 2026 season to 2025 season

Rank Improved Athlete/Team Class 2025 PR 2026 PR
1 -34.98 2026 1:16.62 41.64
2 -8.02 2028 48.82 40.80
3 -5.61 2028 46.83 41.22
4 -5.45 2026 54.70 49.25
5 -4.92 2027 43.53 38.61
6 -4.40 ...