At the 1960 Rome Paralympics, Horan competed in the St Nicholas round of open women's archery, winning the gold medal. In the class C2 women's twenty-five metre freestyle event she won her second gold medal. Her fellow team mates were Oliver Murphy, Fr Leo Close, Jimmy Levins, and Jack Kerrigan. After the games, she attended an audience with Pope John XXIII and the Irish team travelled to Lourdes for three days before returning to Dublin. The lord mayor of Dublin, Maurice Dockrell, and other dignitaries welcomed the team home. In February 1961, Seán Lemass presented Horan with Caltex Sports Stars Awards in Dublin.