MileSplit Staff May 01, 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 Minnesota 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 -21.35 Lexi Van Dyke Southwest Minnesota Christian High School 2028 1:32.01 1:10.66 2 -21.22 Silvia Rogness Park Christian High School 2028 1:32.40 1:11.18 3 -20.49 Grace Swartz Silver Bay (William Kelley) High School 2028 1:38.20 1:17.71 4 -17.83 Lacee Benjamin Anoka High School 2027 1:27.85 1:10.02 5 -13.80 Ava Bordewyk Windom Area High School 2030 1:21.43 1:07.63