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.[1] 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.[2]
Tobias represented her country at the Olympics twice, including a 1500 m bronze medal at the 2008 Beijing Olympics. She also competed at the World Championships in Athletics in 2007 and 2011, and was the 1500 m gold medallist at the 2003 Summer Universiade.[3] During her career, she won Ukrainian national titles in five different events.[2]
Tobias received a two-year ban in 2012 for testing positive for testosterone at the 2011 World Athletics Championships.[4]
| Representing | ||||||
|---|---|---|---|---|---|---|
| 1999 | Riga, Latvia | bgcolor=silver | 2nd | 1500 m | 4:15.91 | |
| 2001 | European U23 Championships | Amsterdam, Netherlands | 9th | 1500 m | 4:17.21 | |
| 3rd | 4 × 400 m relay | 3:34.16 | ||||
| Beijing, China | 5th | 1500 m | 4:12.38 | |||
| 2003 | Daegu, South Korea | 1st | 1500 m | 4:11.69 | ||
| 2004 | Budapest, Hungary | 5th | 1500 m | 4:09.03 | ||
| Monte Carlo, Monaco | 9th | 3000 m | 8:54.32 | |||
| Athens, Greece | 14th (sf) | 1500 m | 4:07.55 | |||
| 2006 | World Indoor Championships | Moscow, Russia | 11th (h) | 1500 m | 4:15.55 | |
| Gothenburg, Sweden | 7th | 1500 m | 4:02.71 | |||
| 2007 | Birmingham, United Kingdom | 6th | 1500 m | 4:09.62 | ||
| World Championships | Osaka, Japan | 9th | 1500 m | 4:10.56 | ||
| 38th (h) | 3000 m s'chase | 10:11.58 | ||||
| 2008 | World Indoor Championships | Valencia, Spain | 13th (h) | 1500 m | 4:11.71 | |
| Beijing, China | 3rd | 1500 m | 4:01.78 | |||
| 2011 | European Indoor Championships | Paris, France | 19th (h) | 1500 m | 4:16.67 | |
| 6th | 3000 m | 9:02.94 | ||||
| World Championships | Daegu, South Korea | DSQ (9th) | 1500 m | DSQ (4:08.68) | ||
| 2012 | World Indoor Championships | Istanbul, Turkey | DSQ (9th) | 3000 m | DSQ (9:00.78) | |