Three 20-year-olds who came of age cycling together at the Brunswick Velodrome will be competing at the Tokyo Olympics this month — WHEN the Tokyo Olympics women’s road race is held on July 25, members of the Brunswick Cycling Club will be cheering for not only Australia, but for Chile. Competing in the 137km race will be two Brunswick alumni: for Australia, Sarah Gigante, and for Chile, Catalina Soto. Meanwhile, a third…