The proposed route remains partially faithful to the GTJ mountain bike route certified by the mountain bike sites in 1992, making this route the first major French crossing between Mandeure, in Doubs, and Culoz, in Ain, across the incredible diversity of the Jura Mountains. The northern part leads by a fairly long climb towards the Maîche plateau, to then remain on the plateau. The crossing of the Doubs Horloger Regional Natural Park is punctuated by very beautiful Comtoise farms up to Pontarlier. The magnificent Fort de Joux marks the entrance to the Haut-Jura Regional Natural Park. Soon the roof of the department comes into view, the Mont d'Or, the summit of which delights with its grandiose panorama of the Alps. During your visit to Métabief, let yourself be tempted by the enduro and free-ride trails of this mountain biking mecca. Chapelle-des-Bois marks the southern end of the Doubs department. A break along the Mortes and Bellefontaine lakes bordered by a magnificent peat bog is essential before cycling in the Jura department. After the lively resort of Les Rousses, the calm and nature of the magnificent Hautes Combes take over. Here, the meadows and sumptuous spruce and fir forests are home to rare fauna... be careful, you are in the land of the capercaillie and the boreal lynx! La Pesse marks the end of the Jura department and Borne au Lion rewards the hiker with a grandiose view of the Jura Mountains and the Crêt de Chalam. The first kilometers in the Ain department have a descending profile to Giron before joining Saint-Germain-de-Joux to climb towards the Retord plateau. If some effort is necessary to gain it, what a reward these large spaces and the calm that reign there are. The end of the trip will be bucolic and heritage, through La Praille and the Valromaysan treasures. Partner of the GTJ, the company BOSCH provides Gtjiste cyclists with charging stations in 10 municipalities along the GTJ cycle routes!
