Half Distance Triathlon Bolton – 36-Week Training Plan for Senior Triathletes 60+ Ready to take on the Half Distance Triathlon Bolton? Whether you’ve conquered sprints, Olympic distances or stepped away from racing for a while, this plan is designed specifically for Senior Triathletes 60+ who are ready to level up without overtraining or risking injury. From the chilly 66°F (19°C) waters of Pennington Flash to the rolling bike climbs through Victoria and Old Kiln Roads, and the energy-filled ...