[2][3] She played multiple sports in her youth, including softball, baseball, and flag football, only taking up soccer at age ten on an AYSO team.

[4] She later played club soccer for Real So Cal and then Slammers FC HB Køge, with which she won the ECNL under-18/19 national title in 2023.

[2][4] Ranked by TopDrawerSoccer as the top left back of the class of 2023, she committed to the University of North Carolina at Chapel Hill in November 2022.

[14] She made her professional debut on March 17, starting at left back in Bay's first-ever game, a 1–0 win against Angel City FC.

[17] On February 3, 2025, King was traded to her hometown team Angel City FC, reportedly at her request, in exchange for $200,000 in immediate intra-league transfer funds and an additional $100,000 in 2026.