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 Montana Girls 800m marks compared to their season’s best performances from 2025. Most Improved - 800 Meter Run Comparing 2026 season to 2025 season Rank Improved Athlete/Team Class 2025 PR 2026 PR 1 -38.14 Katie O'Reilly Columbus High School 2029 3:27.45 2:49.31 2 -24.01 Nathania Hester Baker High School 2026 3:00.38 2:36.37 3 -22.97 Callie Stevens Reed Point High School 2029 2:59.75 2:36.78 4 -21.15 Zoey Croft Roberts High School 2029 3:15.36 2:54.21 5 -18.74 Lailynn Slothower Columbus High School 2029 3:25.94 3:07.20 6 -18.58 ...