Most Improved Colorado Boys 400m Marks Compared to 2025

Apr 10, 2026

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

Comparing 2026 season to 2025 season

Rank	Improved	Athlete/Team	Class	2025 PR	2026 PR
1	-16.45	Nick Clark Soroco High School	2026	1:14.37	57.92
2	-15.36	Tanner Ziek Central Grand Junction High School	2028	1:18.62	1:03.26
3	-15.06	Gage Nielsen Rangely High School	2026	1:23.42	1:08.36
4	-13.78	Joshua Martinez Greeley Central High School	2026	1:18.45	1:04.67
5	-12.95	Tegan Damers Lotus School for Excellence High School	2026	1:13.92	1:00.97
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