Most Improved Colorado Girls 300m Hurdles Marks Compared to 2025

Mar 20, 2026

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

Most Improved - 300 Meter Hurdles

Comparing 2026 season to 2025 season

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Rank	Improved	Athlete/Team	Class	2025 PR	2026 PR
1	-13.01	Reese Osborn Niwot High School	2027	1:13.79	1:00.78
2	-8.49	Leslie Marquez-Almeida Adams City High School	2027	1:03.69	55.20
3	-5.67	Juliana Lee Lakewood High School	2028	1:05.37	59.70
4	-5.64	Sydney Hankes Steamboat Springs High School	2028	1:03.95	58.31
5	-4.36	Erin Hartin Wheat Ridge High School	2028	56.68	52.32
6	-3.55