Juarez qualified for the Guatemalan squad in the women's welterweight class (67 kg) at the 2004 Summer Olympics in Athens, by placing second behind Puerto Rico's Ineabelle Díaz and granting a berth from the Pan American Olympic Qualifying Tournament in Querétaro, Mexico.[4][5] She opened her match with a superb 7–0 victory over Australia's Caroline Bartasek, before dropping a 4–6 decision to the local favorite Elisavet Mystakidou of Greece by the powerful commotion of the home crowd in the quarterfinals.[6] In the repechage rounds, Juarez came strong from her premature exit to edge New Zealand's Verina Wihongi 4–1, and then yielded her revenge over Puerto Rican fighter Ineabelle Díaz for a 5–2 victory to mount a chance for Guatemala's first ever Olympic medal, but she failed to salvage it in a 2–5 defeat to South Korea's Hwang Kyung-seon.[3][7][8]