Miles opted to enroll early at Notre Dame and joined the team on January 25, 2021.[8] Over six games in her first season, she averaged 9.3 points and 3.5 assists per game.[9] On November 21, 2021, Miles posted 14 points and 14 assists, three short of the program single-game record, in a 94–35 win over Bryant.[10] On December 8, she joined Marina Mabrey as the only Notre Dame freshmen to record a triple-double, with 11 points, 13 rebounds and 13 assists in a 73–56 win against Valparaiso.[11] Miles scored a season-high 30 points in a 74–61 win against Boston College on January 30, 2022.[12] In the first round of the NCAA tournament, she became the first freshman in women's or men's tournament history to register a triple-double, with 12 points, 11 rebounds and 11 assists in an 89–78 victory over UMass.[13] As a freshman, Miles averaged 13.7 points, 5.7 rebounds and 7.4 assists per game, ranking second to Caitlin Clark in assists among NCAA Division I players.[14] She was named first-team All-Atlantic Coast Conference (ACC).[15]
On December 10, 2022, Miles posted 13 points, 13 rebounds and 14 assists in a 108–44 win over Merrimack, surpassing Skylar Diggins-Smith and Jackie Young for the most triple-doubles in Notre Dame history, with three.[16] On February 16, 2023, she made the game-winning shot as time expired, while recording 18 points, 11 rebounds and nine assists, in a 78–76 victory over Louisville.[17] Miles suffered a season-ending knee injury during her team's regular season finale against Louisville on February 26. As a sophomore, she averaged 14.3 points, 7.3 rebounds and 6.9 assists per game. Miles was named first-team All-ACC, second-team All-American by the Associated Press (AP) and third-team All-American by the United States Basketball Writers Association (USBWA).[18]
^Olivia Miles, USA Basketball.Accessed August 16, 2022. "Attended and played her prep career at Blair Academy in New Jersey.... Born in Summit, New Jersey, and now resides in Philipsburg, New Jersey."