Nasution competed only in the women's 100 m backstroke at the 2000 Summer Olympics in Sydney. She achieved a FINA B-cut of 1:05.69 from the Asian Championships in Busan, South Korea.[5][6] She challenged seven other swimmers in heat two, including teenagers Sherry Tsai of Hong Kong (aged 17) and Kuan Chia-hsien of Chinese Taipei. Keeping her pace from the start, she shared a fifth seed with Uruguay's Serrana Fernández in a matching time of 1:06.57, almost a full second below her entry standard. Nasution failed to advance into the semifinals, as she placed thirty-eighth overall in the prelims.[7][8]