William Reais

William Reais is a Switzerland sprinter, born on May 4, 1999 in Chur, Switzerland. He competes primarily in the 100m, 200m and 400m.

His personal bests include 10.20 in the 100m, 20.24 in the 200m, 46.39 in the 400m, 38.36 in the 4x100m and 3:19.68 in the 4x400m. He has earned 12 gold and 2 bronze medals in major international competitions. He is currently active on the international athletics circuit, representing Switzerland.