Daily rental available for family celebrations or association events.





Starting in Lélex, this loop combines the main GTJ route with a variant via Mijoux and the Col de la Faucille. A varied route through forests, ridges and panoramic views, perfect for lovers of nature and wide open spaces.
This long loop offers a spectacular immersion in the emblematic landscapes of the Haut-Jura: crossing the Hautes-Combes, the Valserine valley and the majestic peaks of the Haute Chaîne du Jura. Between forests, mountain pastures and breathtaking panoramas, the route alternates between views of the Jura ridges on one side and Lake Geneva and the Alps on the other.
The route takes in the heart of the Haut-Jura Regional Nature Park, and part of the Haute Chaîne du Jura National Nature Reserve: a protected, unspoilt area to be explored with respect.
Good to know - Protected area
Part of the route passes through the Haute Chaîne du Jura National Nature Reserve, which is subject to special regulations:
Dogs are not allowed, even on a lead.
Camping in tents prohibited.
Please respect these rules to preserve the richness of this exceptional environment.
Phone : 04 50 28 09 16
Website :
https://www.paysdegex-montsjura.com
https://www.gtj.asso.fr/idees-randonnees/de-crets-en-combes/
Closed temporarily.
Mountain location
In a nature reserve
Rock
Stone
Ground
Hard coating (tar, cement, flooring)
Grit
Not suitable for strollers
Topo guides references :
The Grande Traversé du Jura on foot guidebook (edition 2022- ref 512)
Map references :
3328OT - CRÊT DE LA NEIGE and 3327ET - MOREZ LES ROUSSES
Office de Tourisme du Pays de Gex - 05/02/2026
www.paysdegex-montsjura.com
Report a problem
▶ This route crosses the Haute Chaîne du Jura National Nature Reserve. Please respect the regulations.
The rules include the following:
Dogs are strictly forbidden, even on a lead.
Plant picking and mineral collecting are also prohibited.
▶ Before setting off :
Check the general and local weather forecast, and make sure there's no precipitation.
Find out about the approach route, the height of the itinerary, the time it will take to complete the climb, and any possible escapes (IGN map, GPS, topo-guide, etc.).
Evaluate possible risks by asking mountain professionals, mountain huts and gîtes.
Inform someone close to you of your objective, and contact them again in the event of any changes: departure and return times, number of participants with telephone numbers for each, vehicle(s), parking, etc.
Avoid setting off alone, and use equipment that is suitable for the activity, adjusted and in good condition: headlamp, complete first-aid kit, survival blanket, etc.
In the event of a problem, call 112 (European emergency number).
▶ The Patou or guard dog: what attitude should you adopt?
When out hiking, it's not uncommon to come across flocks of sheep or goats guarded by guard dogs known as patous. These dogs, formidable against predators such as wolves, bears and lynxes, can frighten hikers with their barking.
The patou protects flocks in total autonomy. Its main role is to deter intruders and alert the shepherd. Raised among the ewes from an early age, he learns to protect them at all times, often in groups.
▶ To avoid problems with a patou:
Identify grazing areas before setting off.
Keep your distance and go around flocks if possible.
In the event of an encounter, stay calm, turn back slowly or stop to let the dog sniff you out.
Don't try to pet or feed the animals, avoid sudden movements, don't run, and avoid taking photos.
▶ For runners:
Do not run when approaching a herd.
Take off your headphones to hear the dog's barking.
By adopting these behaviors, you'll be able to cohabit serenely with guard dogs on your hikes.
3-day itinerary
▶ Day 1: Lélex → Mijoux (via the Haute Chaîne du Jura)
Approx. 6h10 - 16.8 km - D+ 985 m / D- 892 m
From Lélex, go to the old chapel and follow the GR (red and white markings). The route climbs to Ratou, passes the refuge de la Loge, the Col de Crozet, Colomby de Gex, Grand Mont Rond, then descends via the Col de la Faucille to Mijoux. An Alpine crossing with exceptional panoramas.
▶ Day 2: Mijoux → Les Moussières
Approx. 4h45 - 15.4 km - D+ 499 m / D- 324 m
From Mijoux, continue on the GR towards Lajoux, then on to Le Manon, Cariche, les Molunes, the bottom of Liasia, les Rasses and finally Les Moussières. A gentler stage in the heart of the Jura valleys and forests.
▶ Day 3: Les Moussières → Lélex
Approx. 5h45 - 19.9 km - D+ 424 m / D- 637 m
Start from Les Moussières following the GR towards La Muras, Pré Grandvaux, then skirting the Lac de l'Embouteilleux and crossing l'Emboissieux, au Berbouiller, le Berbois, la Borne au Lion, les Closettes and le Niaizet to return to Lélex.
Tip: it is possible to shorten the loop and complete it in 2.5 days, depending on your pace and preferences.
Stage 1: Overnight stay in Mijoux, with a choice of accommodation: the Gîte Communal de la Valserine, La Michaille or Les Berlicants.
Stage 2: Overnight stay in Les Moussières, with a choice of accommodation: Au Chalet, De La Platière or Refuge Sous La Joux.
No. dogs strictly forbidden.