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 Utah 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 -11.13 Zadok Griffin Escalante 2028 1:08.61 57.48 2 -10.62 Ethan Labindao Cottonwood 2028 1:12.67 1:02.05 3 -10.20 Boston Johnson Hurricane 2028 1:22.31 1:12.11 4 -9.81 Jacob Chidester Grantsville 2026 1:08.74 58.93 5 -9.60 Jaylen Milton Ben Lomond 2027 1:14.04 1:04.44 6 -8.20 Logan Suchan Sky View 2028 1:02....