The biggest course of the Transju'trail will start from Mouthe! This course is 80 km long with 3500 m of positive difference in altitude! The start will be very early on Sunday morning in Mouthe and the finish will be in Les Rousses. Other (shorter) races will take place throughout the weekend.
Free access for spectators, registration on the website for participants: https://www.latransju.com/la-transjutrail/transjutrail-51-km/