Katie Ledecky Leon Marchand Adam Peaty Gretchen Walsh Luana Alonso Lilly King Women's 800m Freestyle Ariarne Titmus Ryan Murphy 100m Breaststroke 400-meter Individual Medley Female Swimmers Summer McIntosh Relay Events Cameron McEvoy 400-Meter Freestyle Léon Marchand Future Events Gretchen and Alex Walsh Nic Fink Performance Analysis 100-Meter Breaststroke Men's 200m Freestyle Women's 400m Individual Medley Mollie O'Callaghan Canadian Swimmers Australian Athletes Men's 200m Butterfly Men's 800-Meter Freestyle Men's 1,500-Meter Freestyle 100m Backstroke 100 Metres Backstroke 800 Metres Freestyle 4x200 Metres Freestyle Relay 100-Meter Backstroke Men's 800m Freestyle Daniel Wiffen Disqualification Rules 1,500-meter Freestyle Men's 200m Breaststroke 100-Meter Freestyle Athlete Achievements Competition Results Training and Preparation Emotional Reactions Kyle Chalmers Women's 100-Meter Freestyle Sarah Sjöström Regan Smith 200-Meter Breaststroke Women's Freestyle Medal Achievements 800m Freestyle Kaylee McKeown Emma McKeon Backstroke Men's 50-Meter Freestyle Duncan Scott Ben Proud Rivalries Men's 1500m Freestyle Women's 50m Freestyle Team GB Performance Individual Athletes Swimming Regulations Thomas Ceccon Michael Phelps Caeleb Dressel Sarah Sjostrom Matt Richards Florent Manaudou Tom Dean Team USA Women's Swimming Siobhan Haughey 400-meter Freestyle 400m Freestyle Relay Races Individual Performances Team USA International Competition Historical Context Athlete Interactions Competitions