The Duathlon des 6 Contrées is a run-bike-run race held at the Piscine du triangle in Dachstein, Bas-Rhin, France’s Grand Est region. Organized by Trimoval Molsheim, it takes place in March and features five races. The main S format is short and intense: 5 km running, 20 km cycling, and a final 2.5 km run to the finish. The event also offers youth, XS, S, and relay formats, accommodating juniors, solo adults, and teams.
The name originates from the cycling course, which crosses six municipalities: Kolbsheim, Dachstein, Ernolsheim-sur-Bruche, Duttlenheim, Duppigheim, and Altorf. The start and finish are in Dachstein, with the cycling portion leading participants through nearby villages before returning for the concluding run. One edition serves as the Grand Est championships and D3 semi-final, attracting a more competitive field than typically seen in a local duathlon. In the Open S race, Théo Weber finished first in 51:46, and Éléane Jacquel of Dachstein won the women's race, having also won the prior edition.