Training for the Half Distance Triathlon Boulder requires more than just endurance — it demands a smart, progressive plan that prepares your body and mind for every unique challenge of race day. Our 36-week beginner training plan is specifically designed to help you train with confidence, especially for Boulder’s altitude, terrain, and fast-paced course. 🏊‍♂️ Swim – 1.2 miles: Prepare for a counterclockwise open-water swim starting at the east boat ramp and finishing at the west. With average ...