Katarina Gerboldt was born on March 28, 1989 in St. Petersburg, Russia. She first started skating in 1995 and currently trains with Tatiana Mishina and Alexei Mishin at the Yubileini skating club. Nationally, Katarina is the Russian Bronze Medallist. She has made two appearances at the ISU World Junior Championships, placing as high as 9th overall. She also skated at the 2009 European Championships.