IRONMAN 70.3 Western Sydney on 21 September 2025 is nestled at the base of the Blue Mountains and uses the protected Penrith Lakes for the swim, located at the International Regatta Centre.

The bike course includes breathtaking views of the Blue Mountains. The flat run course takes in Penrith’s Nepean River along the scenic Great River Walk, before runners return to the iconic Sydney International Regatta Centre venue where supporters have plenty of places to cheer on athletes and to celebrate as they run down the finish chute.