Crêt de Chalam walks

The GTJ runs through the Jura Mountains from Mandeure (Doubs) to Culoz (Ain), crossing the Haut-Jura Regional Nature Park and offering a detour into Switzerland. The route suggested here covers the second half of the itinerary. Opened in 2004, the GTJ follows the GR®5, GR®9 and GR® de Pays trails for 400 km. Winding along ridges, skirting lakes and emerging from forests, this is a route accessible to most people, with no particular difficulty. It can be tackled as a 2–3-day trip for families, or as the full 15–20-day route. The route winds through the heart of the Haut-Jura Regional Nature Park and the Haute Chaîne du Jura National Nature Reserve: a protected area to be explored with respect.

Open from 1 April to 30 November (subject to there being no snow) First stage of the Grande Traversée du Jura walking route: from La Borne au Lion to Culoz, in 6 days. The GTJ links Mandeure (Doubs) to Culoz (Ain) in 15 to 20 days, crossing the Jura Mountains and the Haut-Jura Regional Nature Park. The route proposed here corresponds to the second half of the itinerary. The route winds through the heart of the Haut-Jura Regional Nature Park and the Haute Chaîne du Jura National Nature Reserve: a protected area to be explored with respect. Part of the route passes through the Haute Chaîne du Jura National Nature Reserve. Dogs and tent camping are prohibited. Please respect these rules to help preserve this exceptional environment.

Open from 1 April to 30 November, subject to snow conditions. The third stage of the hiking tour: from Mijoux to Chézery-Forens via the Haute Chaîne du Jura. Set off on a crossing of the Haut-Jura between Mijoux and Chézery-Forens, through varied landscapes of valleys, peaks and forests. Over three days, you will walk along the Jura ridges, passing by the Grand Mont Rond, the Crêt de la Neige and the Reculet, with magnificent views of Mont Blanc and the Alps. This crossing takes you to the heart of the Haute Chaîne du Jura, for an authentic experience in the heart of nature. As you will need to carry your own food, remember to bring supplies so you can enjoy this adventure to the full.

Open from 1 April to 30 November ( subject to there being no snow) Third stage of the Grande Traversée du Jura walking route: from La Borne au Lion to Culoz, in 6 days. The GTJ links Mandeure (Doubs) to Culoz (Ain) in 15 to 20 days, crossing the Jura Mountains and the Haut-Jura Regional Nature Park. The route proposed here corresponds to the second half of the itinerary. The route winds through the heart of the Haut-Jura Regional Nature Park and the Haute Chaîne du Jura National Nature Reserve: a protected area to be explored with respect. Part of the route crosses the Haute Chaîne du Jura National Nature Reserve. Dogs arenot permitted, even on a lead, and camping in tents is prohibited Please respect these rules to preserve this exceptional environment.

Open from1 April to 30 November – subject to there being no snow. The section between La Poutouille and Lancrans is the third stage of the six-day walking tour, “The GTJ from Mijoux”. The GR®9 enters the Ain department via Mijoux, before following the spectacular ridges of the Monts-Jura, passing through the Crêt de la Neige, the highest point of the massif. It then descends towards Bellegarde-sur-Valserine, crosses the Retord plateau, and then crosses the Grand Colombier. The trail continues its route to Culoz and the Rhône Valley, before leaving the Ain to reach Savoie and continuing southwards. Part of the route passes through the Haute Chaîne du Jura National Nature Reserve, which is subject to specific regulations:Dogs are not permitted, even on a lead, and camping in tents is also prohibited. Please respect these rules to preserve the richness of this exceptional environment.

Open from 1 April to 30 November – subject to there being no snow. Third stage of the GRP® de la Valserine. From the Roche Fauconnière viewpoint and its panoramic view of the Cirque d'Orvaz, the trail leads to the Lion marker, a historic landmark of the Franco-Comtois border in the 17th century and a key site of the Resistance. It is here that the GR® de Pays crosses the Grande Traversée du Jura and the GR® 5, before a long, gentle descent towards Lélex, a ski resort nestled in the Valserine valley.

Open from 1 April to 30 November – subject to snow conditions. From Bellecombe to Mijoux via the Haute Chaîne: the second stage of the four-day walking tour “La Valserine enchanteresse”. La Valserine is no fairy, but she enchants with every step. Her magical valley guides us between the high plateaus and ridges of the Jura, offering breathtaking views of the Alps. A journey through wild nature and poetry.

Open from 1 April to 30 November – subject to there being no snow. Fourth stage of the GRP® de la Valserine. From Lélex, the trail climbs through the forest to the Chalet de la Loge, the gateway to the nature reserve. The ascent then eases off through clearings and woodland to the ridges, where an exceptional panorama opens up over Lake Geneva, the Alps and Mont Blanc. The route crosses the massif’s two highest points: the Crêt de la Neige (1,720 m) and the Reculet (1,718 m), before skirting the Roche Franche cirque. After the Chalet du Gralet, the forest accompanies you for the final few kilometres to Menthières. Protected area: dogs and tent camping are prohibited in the Haute Chaîne du Jura National Nature Reserve.

Open from 1 April to 30 November - subject to snow conditions First stage of the 3-day, 2-night Crêts en Combes hiking tour.Starting from Lélex, this circular route combines the main GTJ route with the suggested alternative via Mijoux and the Col de la Faucille.The crossing of the Hautes-Combes jurassiennes, the Valserine valley and the peaks of the Haute Chaine du Jura promise breathtaking landscapes. On one side, the view overlooks the ridges, on the other, it overlooks Lake Geneva and the Alps. In the heart of the Haut-Jura Regional Nature Park and partly in the Haute-Chaîne Nature Reserve, this hike takes place in a preserved natural area.

Open from 1 April to 30 November, subject to snow conditions. From Lélex to Mijoux via the Haute Chaîne: first stage of the two-day hiking tour "On the roof of the Jura mountains". From the wild Valserine valley to the balcony of Lake Geneva, this route immerses you in the authenticity of the Haut-Jura. As you cross the Hautes Combes, you will be struck by the raw beauty of the wide open spaces, the silence of the deep forests and the open horizon of the plateaus. The trail climbs gradually, revealing exceptional panoramic views of Mont Blanc and the entire Alpine range. A life-size immersion in a land of traditions and high-altitude landscapes.Please note – Protected areaPart of the route crosses the Haute Chaîne du Jura National Nature Reserve, which is subject to specific regulations:Dogs are not permitted, even on a lead.Camping in tents is prohibited.Please respect these rules to preserve the richness of this exceptional environment.