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 Kentucky Girls 400m marks compared to their season’s best performances from 2025. Most Improved - 400 Meter Dash Comparing 2026 season to 2025 season Rank Improved Athlete/Team Class 2025 PR 2026 PR 1 -15.78 Shyla Haverstick Christian County 2028 1:25.77 1:09.99 2 -10.15 Ja'Lynn Sanderson Pleasure Ridge Park 2026 1:16.46 1:06.31 3 -10.05 Zoe Hart Corbin 2028 1:23.54 1:13.49 4 -9.39 Kaydee Horseman Anderson County 2029 1:22.33 1:12.94 5 -9.29 Quinee Dean Danville Christian 2032 1:31.51 1:22.22 6 -8.46 Katie Skeene Corbin