HALF DISTANCE TRIATHLON Western Sydney in Penrith, New South Wales SWIM - 1.9kmDive into the calm waters of Penrith Lake at the Sydney International Regatta Centre (SIRC). This one-lap course, with a comfortable 66°F (19°C) temperature, is ideal for all levels. Start from a pontoon, glide under the Olympic Bridge, and exit smoothly at the warm-up lake boat ramp. Water Temp: 66°F (19°C). BIKE - 90kmCycle a scenic two-lap route through the countryside with Blue Mountain views. Smooth roads, ...