Kathleen Baker, a prominent athlete from the United States, has made significant strides in her swimming career. She began swimming competitively in 2005, inspired by her mother and sister. Her mother wouldn't let her go off the diving board unless she could swim, which led to her taking up the sport.

| Season | Event | Rank |
|---|---|---|
| 2016 | Women's 4 x 100m Medley Relay | G Gold |
| 2016 | Women's 100m Backstroke | S Silver |
While at the University of California, Berkeley, she was named the 2017 College Swimming Coaches Association of America (CSCAA) National Swimmer of the Year. In 2021, she was listed among the Top 100 Greatest College Swimmers and Divers by CSCAA.
Baker has faced several injuries throughout her career. In May 2021, she fractured a bone in her foot. She also suffered a broken rib in April 2019, which sidelined her for seven weeks. Additionally, she had pneumonia and a concussion in 2019.
Baker resides in the United States with her partner Sean Dowling, who played American football for Vanderbilt University. Her family has a strong swimming background; both her mother Kimberley and sister Rachel competed at university level.
Her parents and coach David Marsh have been influential figures in her career. Marsh coaches Baker at Team Elite Aquatics in San Diego, CA.
In August 2018, Baker turned professional, giving up her final season at the University of California, Berkeley. She described turning pro as both exciting and challenging. It allowed her to focus solely on swimming without academic pressures.
Diagnosed with Crohn's disease at age nine, Baker has managed the condition through medication and diet. Since 2016, she has served as an ambassador for the Crohn's & Colitis Foundation, raising awareness about the disease through public speaking and volunteering.
Looking ahead, Baker aims to win a gold medal in an individual event at the world championships. Her journey continues to inspire many in the sports community.
Kathleen Baker, a prominent athlete from the United States, has made significant strides in her swimming career. She began swimming competitively in 2005, inspired by her mother and sister. Her mother wouldn't let her go off the diving board unless she could swim, which led to her taking up the sport.