Half Distance 70.3 Triathlon Bolton Summary: The event starts with a 1.2-mile (1.9 km) swim at Pennington Flash Country Park. Athletes navigate a one-loop course, passing through enthusiastic crowds, with water temperatures averaging 66°F (19°C). The 56-mile (90 km) bike course features two loops through local villages and a climb along Victoria and Old Kiln Roads, reaching 840m of ascent. Spectators line Chorley New Road, creating an electric atmosphere. The 13.1-mile (21.1 km) run ...