Many say Michael Phelps is the best swimmer ever. Phelps has a total of 66 gold medals when one adds Olympic, World Championship and Pan Pacific Championship medals. Michael Phelps has four freestyle non-relay gold medals. All four are 200m freestyle gold medals. As difficult as are breaststroke, backstroke and butterfly, nearly everyone swims breaststroke, backstroke and butterfly slower than freestyle. From age 2, all swimmers are freestyle swimmers. Not all swimmers are breaststroke, backstroke and butterfly swimmers. The best way to measure swimmers is by their freestyle swimming. Katie Ledecky has 18 non-relay freestyle gold medals from Olympics, World Championships and Pan Pacific Championships. Katie Ledecky has gold medals in four freestyle events: 200m, 400m, 800m and 1500m, Katie Ledecky is the best freestyle swimmer ever. Katie Ledecky is the best swimmer ever. Discuss.