Salcedo qualified for the women's 100 m breaststroke at the 2004 Summer Olympics in Athens, by clearing a FINA B-standard entry time of 1:12.08 from the Spanish Spring Open Championships in Cadiz. She challenged seven other swimmers in heat three, including 15-year-olds Annabelle Carey of New Zealand and Lee Ji-Young of South Korea. She edged out Philippines' Jaclyn Pangilinan to take a fourth spot by one hundredth of a second (0.01) in 1:12.46. Salcedo failed to advance into the semifinals, as she shared a twenty-ninth place tie with Greece's Aikaterini Sarakatsani in the preliminaries.