She switched to the mountain cross discipline full-time after her BMX retirement early in the 2004 season.[5][6]).

She began riding BMX in July 1989 at seven years of age[7] and claimed her first national win in the combined 7–8 Girls Class at the American Bicycle Association (ABA) Great Northwest Nationals in Sumner, Washington, on August 17, 1990;[8] it was her first national-level race.

On June 2, 2008, she won a spot on the team after coming in sixth at the Union Cycliste Internationale (UCI) World Championships held in Taiyuan, China, out of a field of 32 racers, making the top 16.

[18] She did, however, race BMX during the 2003 season and participated in the 2003 ABA Grand National, coming in fifth in the Pro Girls event.

Her last regular BMX race was possibly The NBL Gator Nationals in Avon Park, Florida, on April 4, 2004, where she finished second in the Elite Women event.

American Bicycle Association (ABA) Union Cycliste Internationale (UCI) National Bicycle League (NBL) American Bicycle Association (ABA) Union Cycliste Internationale (UCI)* USA Cycling Games of the XXIX Olympiad (2008 Summer Olympics) Independent Pro Series Championships and Invitational Races An aggressive rider in the Girl Pro class, she was disqualified for precipitating a collision with Kim Hayashi in the last turn of the Pro/Am 14 & Over Girl's Open at the NBL Christmas Classic in Columbus, Ohio, in December 2002.

[22] Kitner started racing mountain bikes part-time in 1997 alongside her BMX career.