|Competitor for Estonia|
|European Indoor Championships|
|Gold||2009 Turin||Long jump|
|European Junior Championships|
Balta finished fourteenth at the 2005 European Indoor Championships in pentathlon and won the bronze medal at the 2005 European Junior Championships in heptathlon. She also competed at the 2006 European Championships in long jump and 100 metres and on the 29th Olympic Games in long jump. She won the gold medal at the 2009 European Indoor Championships, after jumping 6.87 in the fourth round.
Her personal best score in heptathlon is 6180 points, achieved in July 2006 in Arles; in long jump 6.87 meters, achieved in 2009 in Turin (indoor) and 2010 in Tallinn (outdoor); in 100 metres 11.47, achieved in 2006 in Göteburg; and in 200 metres 23.05 in 2006 in Arles. She holds national outdoor records in 100 metres, 200 metres and long jump. She also holds indoor national records in 50 metres, 60 m hurdles and long jump.
Her coach is Andrei Nazarov.
|2005||European Indoor Championships||Madrid, Spain||14th||Pentathlon||3711 pts|
|European Junior Championships||Kaunas, Lithuania||3rd||Heptathlon||5747 pts|
|2006||European Championships||Gothenburg, Sweden||17th||100m||11.47|
|European Championships||Gothenburg, Sweden||23rd||Long jump||6.03 m|
|2008||Olympic Games||Beijing, China||27th||Long jump||6.38 m|
|World Athletics Final||Stuttgart, Germany||2nd||Long jump||6.65 m|
|2009||European Indoor Championships||Turin, Italy||1st||Long jump||6.87 m|
|World Championships||Berlin, Germany||8th||Long jump||6.62 m|
|World Athletics Final||Thessaloniki, Greece||5th||Long jump||6.58 m|
|2010||World Indoor Championships||Doha, Qatar||4th||Long jump||6.63 m|
|European Championships||Barcelona, Spain||—||200m||DSQ|
|European Championships||Barcelona, Spain||16th||Long jump||6.53 m|
|Estonian Sportswoman of the Year