MileSplit Staff May 12, 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 top Class of 2027 Girls 300m Hurdles performers in Massachusetts during the 2026 Outdoor Season. 300 Meter Hurdles Rank Time Athlete/Team Class Meet / Date 1 46.28 Sienna Mercaldi Governor's Academy 2027 ISL Championship May 9, 2026 2 48.73 Alyssa Durant Thayer Academy 2027 ISL Championship May 9, 2026 3 49.32 Tabitha Picucci Groton School 2027 ISL Championship May 9, 2026 4 51.25 Yiling Ding Noble & Greenough 2027 Thayer Home Meet #4 May 2, 2026 5 53.10 Becca Powers Landmark 2027 EIL TF Championships