The Irréduc'Trail de Cazères begins in Cazères, a town in Haute-Garonne, southwest France, near the Pyrénées Ariégeoises Regional Natural Park. This trail-running event features a main race of 26 km with 800 m of elevation gain, placing it in the short-to-middle distance category rather than the ultra-distance scene.
The courses follow rolling trails along the edge of the Ariège Pyrenees, offering participants a hilly yet runnable path. The Irréductibles Bipèdes, a local running club, organizes the race, which began in 2016 with 14 km and 28 km races, a hiking option, and two children's races.