[2] In 2019, McGowan competed in the women's middleweight event at the World Taekwondo Championships held in Manchester, United Kingdom.

She won the gold medal in the women's +73 kg event at the 2021 European Taekwondo Championships held in Sofia, Bulgaria.

[3] McGowan won one of the bronze medals in her event at the 2022 European Taekwondo Championships held in Manchester.

[4] She also won one of the bronze medals in the women's middleweight event at the 2022 World Taekwondo Championships held in Guadalajara, Mexico.

[5] In 2023, McGowan won the silver medal in the women's middleweight event at the World Taekwondo Championships held in Baku, Azerbaijan.