Half Distance Triathlon Hawaii - Kohala Coast Starting at Pauoa Bay on the grounds of the Fairmont Orchid, Hawai'i Hotel, athletes begin with a 1.2-mile swim through the Pacific Ocean's crystal-clear waters at sunrise, with an average water temperature of 75°F (24°C). The bike course leads to the Kohala Coast, following part of the IRONMAN World Championship route, featuring climbs to Hawi, rolling hills, and barren lava fields with 360-degree island views. The course finishes at the ...