Most Improved Colorado Boys 1600m Marks Compared to 2025

May 01, 2026

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Improvement Rankings: Top Colorado Boys 1600m 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	-1:41.81	John Pacheco Atlas Prep High School	2027	7:30.76	5:48.95
2	-1:27.33	Oliver Walvoord Standley Lake High School	2027	6:48.18	5:20.85
3	-1:17.81	Yerosen Taa Northfield High School	2026	6:04.63	4:46.82
4	-1:15.53	Adrian Vis Boulder High School	2026	6:58.83	5:43.30
5	-1:11.69	Lucas Rennhack Durango High School	2028	8:30.37	7:18.68
6	-1:08.70