MileSplit Staff Apr 10, 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 Mississippi 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 -1:37.99 Zeta Smith Heritage Christian Academy (MS) 2032 7:50.71 6:12.72 2 -1:28.54 Anna Gray Presbyterian Christian School 2026 9:03.28 7:34.74 3 -1:22.69 Breana Shelton New Hope High School 2026 8:04.08 6:41.39 4 -1:09.89 Nakyrah Jones Jefferson County High School 2028 9:55.39 8:45.50 5 -1:07.23 Andria Hamilton Long Beach High School 2026 7:06.47 5:59.24