Her most significant achievements was a bronze medal in the 4 × 400 metres relay at the 2004 World Indoor Championships.
She also won silver medals at the 2001 and 2003 Balkan Indoor Championships.
[1] Changing her main event to the 400 metres hurdles in 2003, Rus won the bronze medal at the 2003 European U23 Championships, finished fourth at the 2003 Summer Universiade and won the gold medal at the 2004 Balkan Championships.
Rus also competed in several European Cup Super League meets.
[1] In age-specific competitions, Rîpanu was a part of Romanian teams that won bronze medals at both the 2000 World Junior Championships and the 2001 European Junior Championships.