MileSplit Staff Jun 05, 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 District of Columbia Boys 300m Hurdles marks compared to their season’s best performances from 2025. Most Improved - 300 Meter Hurdles Comparing 2026 season to 2025 season Rank Improved Athlete/Team Class 2025 PR 2026 PR 1 -5.31 Nathan Lightfoot DC International School 2027 51.62 46.31 2 -4.95 Martin Carrington Richard Wright PCS 2026 56.21 51.26 3 -4.73 Xerez Espinoza St. Albans School 2028 44.18 39.45 4 -4.57 Cameron Gardner Bard High School Early College DC 2026 46.08 41.51 5 -4.02 Noah Smith-Morgan Digital Pioneers Academy 2028 54.22 50.20 6 ...