MileSplit Staff Apr 03, 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 800m marks compared to their season’s best performances from 2025. Most Improved - 800 Meter Run Comparing 2026 season to 2025 season Rank Improved Athlete/Team Class 2025 PR 2026 PR 1 -1:00.39 Zyriah Weekly Yazoo City High School 2029 4:35.87 3:35.48 2 -52.79 Zeta Smith Heritage Christian Academy (MS) 2032 3:51.79 2:59.00 3 -39.43 Jayla Chandler St. Joseph Catholic School 2027 4:13.68 3:34.25 4 -34.28 Tanjariay Magee Tylertown High School 2026 3:28.63 2:54.35 5 -33.36 Kennedy Tart Hattiesburg High School 2029 3:15.94 2:42.58 6 ...