[1] In May 2022, Whittaker became only the second high schooler (behind Mary Cain), to break the 2-minute barrier in the 800 m, by clocking a time of 1:59.80 to beat a field of professionals at Icahn Stadium in New York City.

The following month, she broke Cain's high school national record of 1:59.51, running a time of 1:59.04 to win the USA U20 Championships at Hayward Field.

There she won a bronze medal in 2:00.18, only behind fellow Stanford commit Roisin Willis and Swiss athlete Audrey Werro, who both ran under the previous championships record.

She also anchored the Stanford DMR to a first-place finish and ran the third leg on the twelfth place Cardinal 4 × 400 m relay team.

[11] Her father, Paul, coaches her and an all boys high school track team, Mount Saint Joseph in Baltimore Maryland.