The Olympic 10K Marathon Swim was held in a flat, calm rowing basin in 2008 (Beijing) and a flat, calm lake in 2012 (London). But over the 4-year quadrennial, the winning times of the men significantly dropped from 1:51:51 to 1:49:55. The women’s winning time dropped from 1:59:27 to 1:57:38. While conditions were different and […]