Nataliya Tobias

Nataliya Viktorivna Tobias (Ukrainian: Наталія Вікторівна Тобіас, née Sydorenko (Сидоренко); born 22 November 1980 in Serov, Soviet Union) is a female former middle-distance runner from Ukraine, who specialized in the 1500 metres. She holds personal bests of 4:01.78 minutes for the 1500 m, 2:02.31 minutes for the 800 metres, and 8:51.32 minutes for the 3000 metres. Tobias received a two-year ban in 2012 for testing positive for testosterone at the 2011 World Athletics Championships.

Nataliya Tobias

Nataliya Viktorivna Tobias (Ukrainian: Наталія Вікторівна Тобіас, née Sydorenko (Сидоренко); born 22 November 1980 in Serov, Soviet Union) is a female former middle-distance runner from Ukraine, who specialized in the 1500 metres. She holds personal bests of 4:01.78 minutes for the 1500 m, 2:02.31 minutes for the 800 metres, and 8:51.32 minutes for the 3000 metres. Tobias received a two-year ban in 2012 for testing positive for testosterone at the 2011 World Athletics Championships.