MileSplit Staff Mar 16, 2026 PRO See the rest of this article Access the complete article with MileSplit PRO. Subscribe to keep reading Already a subscriber? Log in. Ranking the Most Improved Class of 2027 Boys 1600m performers from California compared to their best results from 2025. Most Improved - 1600 Meter Run Comparing 2026 season to 2025 season Rank Improved Athlete/Team Class 2025 PR 2026 PR 1 -2:00.30 Diego Lopez Perris (SS) 2027 7:57.45 5:57.15 2 -1:53.20 Michael Leyva Cantwell-Sacred Heart (SS) 2027 8:22.06 6:28.86 3 -1:22.69 Jessie Zaragoza Citrus Valley (SS) 2027 7:01.70 5:39.01 4 -1:21.01 Henry Sprague Skyline (OK) 2027 7:17.30 5:56.29 5 -1:17.86 Gilberto Baeza Chaffey (SS) 2027 6:40.38 5:22.52 6 -1:09.83 ...