Most Improved Colorado Boys 300m Hurdles Marks Compared to 2025

Apr 17, 2026

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Improvement Rankings: Top Colorado Boys 300m Hurdles marks compared to their season’s best performances from 2025.

Most Improved - 300 Meter Hurdles

Comparing 2026 season to 2025 season

Rank	Improved	Athlete/Team	Class	2025 PR	2026 PR
1	-11.70	DeVaughn Singleton Northglenn High School	2028	58.19	46.49
2	-8.67	Anarbold /Andy Uuganbayar Denver South High School	2027	53.07	44.40
3	-7.45	Ryder Wallace Arapahoe High School	2028	54.39	46.94
4	-7.40	Anderson Habana Yuma High School	2028	57.40	50.00
5	-7.08	Sage Harmsen Centauri High School	2028	1:03.37	56.29
6	-6.96	...