MileSplit Staff May 01, 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 Minnesota Girls 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 -65:52.98 Grace Cox Rochester John Marshall 2030 67:05.24 1:12.26 2 -23.66 Alysa Mertens Cambridge-Isanti High School 2027 1:22.04 58.38 3 -9.68 Eden Palokangas Redwood Valley High School 2030 1:04.03 54.35 4 -7.37 Suzette Guthrie Upsala High School 2029 1:10.00 1:02.63 5 -7.03 Hannah Sang Chanhassen High School 2029 1:04.25 57.22 6