Sydney Marshall plays Beach Volleyball at Concordia University Irvine. A freshman, Marshall graduated from West Linn High School in West Linn, Oregon in 2021. She played her club ball for Athena Volleyball Academy, Portland Volleyball Club, and Portland Junior Beach.
More than just a student-athlete, Sydney has amassed strong followings on Instagram and TikTok, where she posts modeling and influencer content alongside personal media. She also launched a swimwear brand, Araya Swim, which she operates with her sister Summer.