MileSplit Staff Apr 24, 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 -5.48 Asher SIMON West Liberty 2028 21.17 15.69 3 -4.84 Gavin Baker Camanche 2026 21.57 16.73 4 -3.02 Grayson Arthur Belmond-Klemme High School 2028 21.49 18.47 5 -2.93 Brooks Billick South O'Brien High School 2028 19.57 16.64 6 -2.64 Perry Spoon...