Mal O'Brien
Also known as: Mallory O'Brien 
Mal O'Brien alias list
Mallory O'Brien - https://en.wikipedia.org/wiki/Mal_O%27Brien
Mal O'Brien Biography
Personal
Age: 22 years old
Born: Thursday 1st of January 2004
Years active: 2018-present (started around 14 years old; 8 years active)
Birthplace: Iowa, United States
Nationality: (American)
Ethnicity: Caucasian
Professions: Influencer, Sportswoman: CrossFit athlete
Sexuality: Straight
Body
Hair color: Brown
Eye color: Brown
Height: 5'3" (or 160 cm)
Weight: 145 lbs (or 66 kg)
Body type: Muscular
Bra/cup size: 32B show conversions
Boobs: Real/Natural
Extra
Instagram follower count: 591k (as of April 2026)
About Mal O'Brien
Mallory O'Brien is a CrossFit athlete. In 2022, at the age of 18, she came in second at the 2022 CrossFit Games, becoming the youngest ever person to podium. Earlier in the year, she was the youngest ever person to win the Crossfit Open, and in 2021 was named CrossFit's Rookie of the Year.
As of January 2024, she has amassed 719,000 followers on her Instagram platform.
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