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 Missouri 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 -1:29.11 Hailey Simmons Versailles High School 2028 9:39.32 8:10.21 2 -1:05.39 Markeisha Cotton Sikeston High School 2028 8:37.10 7:31.71 3 -58.72 Elizabeth Seymour Neosho High School 2028 8:30.23 7:31.51 4 -57.24 Camila Manjarrez Bayless High School 2027 8:04.55 7:07.31 5 -56.96 Emilyn Bennett Buffalo High School 2028 7:34.11 6:37.15 6 -56.87 ...