Focus In October: Perhentian Island Marathon Swim Courtesy of Mohammed Sofian Ismail, Pulau, Perhentian Besar, Malaysia. Will Sweden’s Fredric Liljestrom and Sheryl Lyn Slater defend their record-setting times (of 3 hours 35 minutes and 4 hours 1 minute) this year on October 10th at the Perhentian Island Marathon Swim, a 16 km circumnavigation swim held […]