Di participated in indoor track and field for three seasons, outdoor track and field for two seasons, lacrosse for two seasons, and cross country for one season at Lowell High School. She qualified for the state championships in both her junior and senior seasons, earning the Coaches Award from her team in her senior year.
Di is the daughter of Kevin Di and Samontha Khaov. She has an older brother named Brendan. She is majoring in biology.