Most Improved California Boys 400m Marks Compared to 2025

Apr 24, 2026

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Improvement Rankings: Top California 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	-16.44	Diego Ochoa McFarland (CS)	2026	1:06.38	49.94
2	-10.61	Lewis Argueta Hesperia (SS)	2026	1:02.32	51.71
3	-10.16	Jason Hamilton Jr Clayton Valley Charter (NC)	2027	1:04.88	54.72
4	-9.82	Kiyon Neal Lincoln (Abraham) (SD)	2026	1:02.71	52.89
5	-9.64	Schnire Reddix II Carson (LA)	2027	1:01.13	51.49
6	-9.59	Aiden Ibarra C...