One2Tri 2026

One2Tri takes place in mid-September at Lac d'Aiguebelette, a natural lake near Novalaise in Savoie, France. The event provides two primary race distances: an M distance for individual competitors and an L distance open to individuals, pairs, or relay teams. The M race includes a 1.25 km swim, a 33.5 km road bike segment, and a 9 km road run. The L race features two 1.25 km swim loops, an 83.8 km road bike course that includes the Col de l'Épine, and a 17.3 km road run. Approaching its ninth edition, the event has established a history.