Most Improved 400m Boys Sprinters from Last Season - Jan 16

Jan 15, 2026

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We compare year-over-year improvements for athletes whose 2026 performance has dropped in time compared to their 2025 records thus far. This article includes performances through January 15th.

Most Improved - 400 Meter Dash

Comparing 2026 season to 2025 season

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Rank	Improved	Athlete/Team	Class	2025 PR	2026 PR
1	-13.86	Landon Klausman Old Bridge HS	2027	1:22.01	1:08.15
2	-12.90	Tommy Woods Cedar Creek HS	2028	1:32.68	1:19.78
3	-12.13	Adrian Portuondo Monmouth Reg. HS	2026	1:17.10	1:04.97
4	-8.79	Julio Rzemieniewski Gill St. Bernard's School	2028	1:12.60	1:03.81
5	-8.56	Diego Santos Freehold Boro HS	2028	1:15.68	1:07.12