Edited sentence: C-1 (canoe single) Men.C-1 1000m (canoe single) Men.C-1 500m (canoe single) Men.C-2 (canoe double) Men.C-2 1000m (canoe double) Men.C-2 500m (canoe double) Men.Canoe and kayak events have been part of Olympic competition since 1936.Competitors must maneuver their boat through 20 to 25 gates in turbulent water over a 300-metre course in the shortest possible time with points deducted for gates touched or missed.Races are on a flatwater course in assigned lanes