MileSplit Staff May 08, 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 Iowa Boys 110m Hurdles marks compared to their season’s best performances from 2025. Most Improved - 110 Meter Hurdles Comparing 2026 season to 2025 season Rank Improved Athlete/Team Class 2025 PR 2026 PR 1 -5.87 Salvador Gonzales-Hernan Des Moines North High School 2028 26.21 20.34 2 -5.67 Gavin Baker Camanche 2026 21.57 15.90 3 -5.48 Asher SIMON West Liberty 2028 21.17 15.69 4 -3.55 Grayson Arthur Belmond-Klemme High School 2028 21.49 17.94 5 -3.39 Jack Cooper Denver 2028 19.34 15.95 6 -3.30 Collyn Hofmeister AGWSR H...