[2] At 18 years old, she went to the 2007 Pan American Games, in Rio de Janeiro, where she won the bronze medal in the 200-metre butterfly, beating the Brazilian record, with a time of 2:13.35.

[7] Integrating national delegation that disputed the 2011 Pan American Games in Guadalajara[8] she finished 10th on the 100-metre butterfly heats, not going to the final.

[11] Dias also swam the heats of the Women's 4 × 50 metre medley relay, with a time of 1:47.20, South American record.

[18] At the 2016 FINA World Swimming Championships (25 m) in Windsor, Ontario, she went to the Women's 100 metre butterfly final, finishing 8th.

[20] At the 2018 FINA World Swimming Championships (25 m) in Hangzhou, China, at the Women's 100 metre butterfly, Dias broke the South American record in the semifinal, with a time of 56.40,[21] and in the final, she won an unprecedented bronze medal for Brazil in this event, breaking again the South American record with a time of 56.31.