Most Improved California Boys 400m Marks Compared to 2025

Mar 13, 2026

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Improvement Rankings: Highlighting the top California Boys 400m performers this Outdoor Season compared their best results from 2025.

Most Improved - 400 Meter Dash

Comparing 2026 season to 2025 season

Rank	Improved	Athlete/Team	Class	2025 PR	2026 PR
1	-14.95	Diego Ochoa McFarland (CS)	2026	1:06.38	51.43
2	-12.71	Armaan Bhasin Dublin (NC)	2026	1:12.66	59.95
3	-10.06	Alexis Guzman Le Grand (SJ)	2028	1:09.99	59.93
4	-9.40	Aaden Lopez Mayfair (SS)	2027	1:10.17	1:00.77
5	-9.27	Lewis Argueta Hesperia (SS)	2026	1:02.32	53.05
6	-9.06	Micah Woods Center (SJ)	2028	1:09.22	1:00.16
7	-8.47	Sammy Na...