[4] Living at the High Performance Centre (CAR) of San Cugat del Vallés in 2013, she shared a room with Melani Costa.

[3] At the 2009 IPC Swimming European Championships in Reykjavík, Iceland, Sarai Gascón Moreno, Ana Rubio, Esther Morales Fernández and Julia Castelló won a bronze medal in the 4x100 meter medley relay.

[8] In 2010, she competed at the Tenerife International Open,[14] where she set a world record for the S6 100 meter backstroke.

[15] Castelló competed at the 2011 IPC European Swimming Championships in Berlin, Germany, where she won a bronze medal.

[16] At the 2012 Paralympic Swimming Championship of Spain by Autonomous Communities, she set a world record in the 200 meter backstroke.