Full Distance Triathlon Korea – Gurye: Race Through Nature’s Beauty Known as the “Road to Nature”, this event offers a breathtaking course surrounded by mountains, rivers, and vibrant landscapes. Swim – 3.9 km in Guman Reservoir Dive into the crystal-clear waters of Guman Reservoir in Jirisan Lake Park, part of Korea’s first national park. Enjoy stunning views of Jirisan Mountain and serene surroundings. Average water temperature: 73°F (23°C). Bike – 180 km of Mountain and River Views Cycle ...