|Born||15 January 1984|
|Height||1.66 m (5 ft 5 in)|
|Weight||75 kg (165 lb)|
Her first big successes were bronze medals from 2002 World and European Junior Championships. As a junior, she also competed in double trap, her best result was the 6th place from the 2001 World Junior Championships. As a senior, she has all three medals from the World Championships: bronze from 2003, silver from 2011, where only Liu Yingzi defeated her and gold from 2010, with 72 hits in qualification and 19 in final, beating Liu Yingzi and Jessica Rossi. At the European Shooting Championships, she took a medal from every competition since 2013, her total score is two gold, three silver and two bronze medals. At the first European Games, with Erik Varga, they won a gold medal in the mixed trap event. She also won seven individual World Cup events, including two World Cup finals.
She entered the 2008 Summer Olympics as a holder of the qualification (74 hits) and final (96) world records which she achieved in 2006 at the World Cup event in Qingyuan. She won the qualification round, but placed second in the final, where she missed two more targets than Satu Mäkelä-Nummela of Finland. Her world records lasted to the 2012 Summer Olympics, where they were overcome by Jessica Rossi of Italy, who missed only one target in the whole competition. Štefečeková was the most successful in the silver medal shoot-off, beating Delphine Réau of France and Alessandra Perilli of San Marino. She is the first sports shooter who managed to defend her medal in the women's trap competition at the Olympic Games. Despite qualifying for the 2016 Summer Olympics, she did not compete due her maternity leave.
- The official website of the BEIJING 2008 Olympic Games. "Athlete – The official website of the BEIJING 2008 Olympic Games". Archived from the original on 13 August 2008.
- "Strelkyňa Štefečeková nepôjde do Ria, dôvodom tehotenstvo". Retrieved 20 August 2016.
- "Archived copy". Archived from the original on 25 August 2008. Retrieved 31 August 2008.CS1 maint: Archived copy as title (link)
- "Rehák Štefečeková priviedla na svet syna Nathana". Retrieved 17 August 2016.