MileSplit Staff Apr 24, 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 South Carolina 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 -18.86 Aubree Ferguson Pelion 2029 1:31.53 1:12.67 2 -15.77 Layla Mills Columbia 2028 1:19.31 1:03.54 3 -13.58 Omega Calloway Ridge View 2028 1:30.40 1:16.82 4 -12.75 Jordan McMillan Lugoff Elgin 2026 1:19.91 1:07.16 5 -12.39 Amari Wilson Carvers Bay 2027 1:27.23 1:14.83 6 -11.93 Annie Oliver Holly Hill Academy HS ...