IRONMAN 70.3 Washington, the ultimate test of endurance and athleticism located in the beautiful Maple Valley. This race is not for the faint of heart, but for those who are ready to push their limits and achieve greatness. The swim segment takes place in Lake Wilderness, where athletes will dive into crystal-clear waters and swim 1.2 miles in a loop course. The cool water temperature will give you the refreshing start you need to tackle the next two segments. The bike course will take you ...