[2] Blonska was born as Lyudmyla Leonidivna Shevchuk on 9 November 1977 in Simferopol, Crimea, Ukrainian SSR.

In 1995, after finishing school, Blonska moved to the capital, Kyiv, to begin training as member of the Ukrainian youth team.

Blonska's personal best heptathlon score is 6832 points, a Ukrainian record, achieved in August 2007 in Osaka where she won the silver medal.

At the 2008 Olympics, Blonska won silver in the women's heptathlon, but she was quickly disqualified and lost her medal after she tested positive for the anabolic steroid methyltestosterone.

[3] She had qualified for the long jump final, but the International Olympic Committee decided to expel her from the Games completely.