[1] She represented Ukraine in two editions of the Olympic Games (2004 and 2008) and also swam for Ukraïna Zaporizhzhia.

Samorodina made her first Ukrainian team at the 2004 Summer Olympics in Athens, where she competed in the women's 200 m butterfly.

Swimming in heat one, she put up a sprint race with neighboring Russia's Maria Bulakhova and Chinese Taipei's Cheng Wan-jung on the final lap, but could not catch them by almost a full-body length to finish third and twenty-seventh overall in 2:17.15.

[2][3] At the 2008 Summer Olympics in Beijing, Samorodina shifted her focus from the pool to the open water surface, competing in the inaugural women's 10 km marathon.

[4][5] Swimming against a field of twenty-four, including South African amputee Natalie du Toit, British duo Keri-Anne Payne and Cassandra Patten, and sixteen-year-old American Chloe Sutton, Samorodina finished the grueling race in twenty-third position with a total time of 2:10:41.6, eleven minutes and thirteen seconds (11:13) behind winner Larisa Ilchenko of Russia.