Bill Welzien has completed 121 solo 20.1 km circumnavigation swims around Key West in southern Florida over the course of his career

Courtesy of WOWSA, Key West, Florida. Bill “Ciastko” Welzien completed his Century Swim around Key West in May, but he has continued his unprecedented number of solo swims around the 20.1 km island in southern Florida. His 103rd circumnavigation swim around Key West was escorted by Douglas Weeks [shown on left] in the 89°F (31.6°F)