Xterra Dunsborough is Australia's largest off-road triathlon. Xterra Dunsborough is part of the World’s premier off-road triathlon series – conducted by Rapid Ascent. Taking place in the pristine natural landscapes of Meelup Regional Park, this is an all-action weekend that anyone can be part of with long, short and kids off-road triathlons in a friendly race atmosphere that’s welcoming to everyone. 2025 will see once again the inclusion of two trail running races through beautiful Meelup Regional Park, with 10-kilometre and 21-kilometre options. These are truly spectacular courses... as good as trail running gets! Triathletes will race through paradise too – swimming in the turquoise waters of protected Geographe Bay, mountain biking along flowing single track lined with wildflowers and trail running along a sculptured granite coastline. All events are part of the Xterra Global Series with an international reach and following.