Attending
Claremont High School, she set the all time 100m school record with a time of 11.49s (+2.2w) and the wind legal school record of 11.59s (+1.7) both of which still stand. She also set the all-time 200m record with a time of 23.68s (+3.1w) and the wind legal record of 23.79s (+0.6). In 2019, Brown won the 300m event at the
US Indoor Championships in a championship record of 35.95s. After finishing second in the 200m at the
US Championships, she was selected for the 200m at the
World Championships, where she won the silver medal in the final, recording a personal best time of 22.22s, finishing behind
Dina Asher-Smith. In 2020, Brown signed a contract with
Adidas that took her through the 2024 US Olympic trials. In 2022, she set new PBs in both the 100m and 200m, with 10.96s and 21.99, respectively. Brown won the 200m at the
NACAC Championships, held in
Freeport, Bahamas, in 22.35s (0.3). At the 2023 Toyota
USATF Outdoor Championships, Brown placed second in the 100m with a personal best time of 10.90s, thus qualifying her for the
2023 World Athletics Championships, where she made the final, finishing 7th. Brown won her first
Diamond League meeting at the 2024
Bislett Games, running 22.32 from lane eight. At the
2024 USATF Olympic trials in Eugene, she placed 2nd in the 200m, in a new personal best of 21.90s (0.6 m/s wind), behind
Gabby Thomas and just ahead of
McKenzie Long, to qualify for her maiden Olympic Games in Paris. On July 18, 2024, Brown announced that she had signed a contract with
Nike. On September 27, 2024, Brown won the 200m at the inaugaural
Athlos meet, also placing second in the 100m. In December 2024, it was announced that she had signed up for the inaugural season of the
Michael Johnson-founded
Grand Slam Track. == Competition results ==