HALF DISTANCE TRIATHLON CAIRNS RACE GUIDE 1.9km Swim at Palm Cove: Start at Palm Cove with a 1.9km swim from Williams Esplanade to the northern Swim Exit. This single lap course is closer to shore this year for smoother conditions, with a water temperature of 73°F (23°C). 90km Scenic Bike Course: Bike 90km from T1 at Palm Cove north on the Captain Cook Highway towards Port Douglas. Enjoy breathtaking views from Rex Lookout and scenic routes back past Palm Cove, finishing at T2 in Fogarty ...