Most Improved Illinois Boys 1600m Marks Compared to 2025

May 29, 2026

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Improvement Rankings: Top Illinois Boys 1600m marks compared to their season’s best performances from 2025.

Most Improved - 1600 Meter Run

Comparing 2026 season to 2025 season

Rank	Improved	Athlete/Team	Class	2025 PR	2026 PR
1	-2:38.28	Ryan McGroarty Rockford (Boylan Catholic)	2027	7:53.28	5:15.00
2	-1:47.40	Connor Moran Lockport (Twp.)	2029	6:27.32	4:39.92
3	-1:42.17	Frankender Acosta Chicago (Juarez)	2028	7:10.77	5:28.60
4	-1:31.85	Nathan Berhane Chicago (St. Ignatius College Prep)	2026	6:31.81	4:59.96
5	-1:31.09	Zachary Ervin Kankakee (Sr.)	2028	6:41.78	5:10.69
6	-...