The Gorges du Trient Challenge has its origins in the old popular walk that once took place in the town of Vernayaz and relaunched in 2017. This Challenge is unique in its kind because it brings together walkers and runners on the same route, on August 15 . Departing from Vernayaz, the route will take you to the village of Salvan via the Gorges du Trient. The descent to Vernayaz will be done by the route des Diligences and its famous 37 laces.