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 Wisconsin 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 -11.99 Anaya Bonn Nekoosa 2028 1:39.44 1:27.45 2 -8.64 Aryana Ausderau Whitehall 2026 1:16.43 1:07.79 3 -8.10 Lillian Neumaier Rio 2026 1:33.48 1:25.38 4 -7.31 Olive Impullitti Amherst 2028 1:51.79 1:44.48 5 -7.28 Carmen Onsager Mauston 2027 1:17.40 1:10.12 6 -6.41 Madeline Kaiser Cedarburg 2027 1:26....