MileSplit Staff Apr 17, 2026 PRO See the rest of this article Access the complete article with MileSplit PRO. Subscribe to keep reading Already a subscriber? Log in. Improvement Rankings: Top Illinois Girls 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 -1:38.72 Cynthia Alonso Zion (Z.-Benton) 2026 10:15.91 8:37.19 2 -1:20.68 Michelle Solis Chicago (Solorio Academy) 2027 8:07.54 6:46.86 3 -1:12.78 Hannah Secrest Maple Park (Kaneland) 2026 8:07.67 6:54.89 4 -1:03.77 Jakayla Atkins East St. Louis (Sr.) 2028 7:13.30 6:09.53 5 -59.67 Munya Yasin Oak Lawn (Community) 2026 7:36.67 6:37.00 6 -56.41 ...