She was born in Celje and lived in Velenje until briefly moving to Monaco.

She later settled on the 800 metres where she found relative success on the IAAF Golden League circuit, despite having to compete against Maria de Lurdes Mutola, who went unbeaten at all major championships from 1999 until the 2004 Summer Olympics.

A photo-finish showed her in third-place, winning the bronze medal.

[1] Čeplak said that she has never taken any illegal substances and would try to prove her innocence with all means possible.

[3] After a divorce from Aleš Čeplak in 2007, she married triple jumper Andrej Batagelj from Nova Gorica in 2009.