The Duathlon des Quernons is a nature duathlon in Trélazé, near Angers in Maine-et-Loire, France, typically held in early March. It is a run-bike-run event, not a triathlon, offering formats for young children, older youth, XS, and S distances. Each race can be completed solo or as a duo, accommodating individual competitors and pairs sharing the effort.
The routes are primarily off-road, with approximately 70% on paths and 30% on road, designed for mountain bikes, hybrid bikes, and gravel bikes. The S format covers 15 km, the XS 12.5 km, and youth races are shorter, beginning just over 10 km. ANJOU TRIATHLON TRELAZE organizes the event, which has limited places. The combination of child, short-course, solo, and duo categories provides a local club atmosphere, distinct from a large city mass race.