Most Improved Idaho Boys 400m Marks Compared to 2025

Apr 17, 2026

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Improvement Rankings: Top Idaho 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	-11.66	Tryson Gundersen Shelley High School	2027	1:14.82	1:03.16
2	-8.99	Blake Swain Columbia High School	2028	1:06.45	57.46
3	-8.49	Riley Jordan Centennial High School	2027	1:10.85	1:02.36
4	-7.33	Gabe Haas Mullan High School	2028	1:20.87	1:13.54
5	-7.16	Jackson Hagrman Idaho Falls High School	2027	1:03.13	55.97
6	-6.81	Eli Allen ...