Thorburn was a member of the Canada women's national basketball team which participated in basketball at the 2015 Pan American Games held in Toronto, Ontario, Canada July 10 to 26, 2015. Canada opened the preliminary rounds with an easy 101–38 win over Venezuela. The following day they beat Argentina 73–58. The final preliminary game was against Cuba; both teams were 2–0, so the winner would win the group. The game went down to the wire with Canada eking out a 71–68 win. Canada would face Brazil in the semifinal.