MileSplit Staff Apr 10, 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 Nebraska Boys 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 -9.43 Andrew LaPorte Bellevue West High School 2028 1:21.76 1:12.33 2 -9.28 Trey Gowery Wynot High School 2028 1:19.49 1:10.21 3 -8.68 Liam Curtis Ashland-Greenwood High School 2027 1:09.04 1:00.36 4 -7.80 Tre Left Hand Bull Riverside 2028 1:12.63 1:04.83 5 -7.72 Cooper Knackstedt Hi-Line (Eustis-Farnam & Elmwood) 2026 1:03.67 55.95 6 -6.71 ...