MileSplit Staff May 22, 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 Oklahoma Girls 1600m marks compared to their season’s best performances from 2025. Most Improved - 1600 Meter Run Comparing 2026 season to 2025 season Rank Improved Athlete/Team Class 2025 PR 2026 PR 1 -1:49.40 Masyn Johnson Harrah High School 2029 7:59.27 6:09.87 2 -1:27.71 Eliot Michalski Norman High School 2027 7:18.25 5:50.54 3 -1:13.37 Daltrey Gibson Norman High School 2027 6:54.36 5:40.99 4 -1:11.62 Zoie Hoff Lone Grove High School 2028 6:59.43 5:47.81 5 -1:07.23 Carly Reichert Southmoore High School 2028 7:17.46 6:10.23 6 -1:04.40 ...