Most Improved Massachusetts Boys 400m Marks Compared to 2025

May 01, 2026

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Improvement Rankings: Top Massachusetts Boys 400m marks compared to their season’s best performances from 2025.

Comparing 2026 season to 2025 season

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Rank	Improved	Athlete/Team	Class	2025 PR	2026 PR
1	-12.60	Parker Jourdain Easthampton High School	2029	1:20.34	1:07.74
2	-11.72	Bocanov Alexis Randolph High School	2027	1:19.14	1:07.42
3	-11.69	Soren Castenson Amherst-Pelham Regional High School	2028	1:12.99	1:01.30
4	-10.94	Jaylyn Santos Leverone Bridgewater Raynham Regional High School	2028	1:13.27	1:02.33
5	-10.19	Warren Rivers Lincoln-Sudbury Regional High School	2026