One of the northernmost open water swims in the world, the Change Your Latitude 57 degrees North Open Water Challenge is happening this weekend in Sitka. Race director Kevin Knox and swimmers Grant Turner and Patrick Williams visit the KCAW studio to talk about the race’s history and provide details of Sunday’s fifth annual race. The 10k portion starts at the Coast Guard gazebo on Japonski Island at 8 a.m.; the 1k begins at 11 a.m. The event is a fundraiser for the Baranof Barracuda Swim Club. Click here or call Kevin Knox at 738-4664 for more information.