Competition record
| Year | Competition | Venue | Position | Event | Notes |
|---|---|---|---|---|---|
Representing the  Czech Republic
| |||||
| 1996 | World Junior Championships | Sydney, Australia | 14th (sf) | 800m | 1:50.23 |
| 1997 | World Indoor Championships | Paris, France | 19th (h) | 800 m | 1:51.33 |
| European Junior Championships | Ljubljana, Slovenia | 3rd | 800 m | 1:51.51 | |
| Universiade | Catania, Italy | 19th (sf) | 800 m | 1:50.38 | |
| 1998 | European Indoor Championships | Valencia, Spain | 8th (sf) | 800 m | 1:50.16 |
| 1999 | European U23 Championships | Gothenburg, Sweden | 4th | 800 m | 1:47.02 |
| World Championships | Seville, Spain | 7th (sf) | 800 m | 1:45.78 | |
| 2000 | European Indoor Championships | Ghent, Belgium | 4th (sf) | 800 m | 1:50.33 |
| Olympic Games | Sydney, Australia | 24th (h) | 800 m | 1:47.66 | |
| 2002 | European Indoor Championships | Vienna, Austria | 5th (sf) | 800 m | 1:48.25 |
| 2003 | World Indoor Championships | Birmingham, United Kingdom | 10th (sf) | 800 m | 1:48.73 |
| Universiade | Daegu, South Korea | 1st | 800 m | 1:48.01 | |
