


With a fairly steep gradient, the Signal des Voirons trail allows you to discover part of the Massif des Voirons, which together with the Salève and Vuache form the Monts du Genevois.
N°. 1 Lac de Machilly (car park on the south side): On exiting the car park, turn left towards the village, go back up the Route des Framboises and take the road leading to Bons-en-Chablais. Cross the D903. Take the Route de Borringes, then the Chemin du Chamenard which turns into a dirt track and continues as far as Chamenard.
N°. 2 Continue climbing on the surfaced Chemin du Sauget.
N°. 3 Turn right along a fairly steep path which brings you out at the bottom of the pastureland of Le Sauget. Go up until you reach the farm of Le Sauget on your right.
N°. 4 Following a treelined path, bear right as you leave the pastureland, cross a stream and go into the wood to pick up a forestry road. Go up this road and after an open section, take a path on your left, cross another forestry road and you will come to the Maison Forestière de la Servette.
N°. 5 Continue until you reach another forestry road, then turn left. A few more zigzags will bring you to the ridge. (GR Balcon du Léman long distance path). Go left and follow the Grande Randonnée (long distance path). At the Signal des Voirons (altitude 1480 m), continue along the ridge, which has some steep downhill sections, until you reach the chapel.
N°. 6 Go past the front of the chapel and down a few steps, still on the GR long distance path, cross the clearing of La Moutionnière, cross the forestry road. At the bottom of a short precipitous stretch, turn right onto a forestry track. On exiting the wood, turn right, then left and left again; the road is surfaced from here on and leads to the hamlet of "Les Granges" at the foot of the "Tour de Langin" (Tower of Langin). In the hamlet, turn left between the houses and follow the surfaced road straight ahead. The route goes round a house, at the first left-hand bend head back to Chamenard. Return to the departure point, the Lac de Machilly.
From 01/04 to 31/10 daily.
Subject to favorable weather.
Conseil Départemental de la Haute-Savoie - 20/11/2025
www.hautesavoiexperience.fr
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Lakeside or by stretch of water
Close to GR footpath
Mountain view
Waterside
Station district
Lake view
In the country
Mountain location
Close to a public transportation
Bus stop < 500 m
Phone : 04 50 95 07 10
Email : ot@montsdugenevois.com
Facebook : https://www.facebook.com/MontsduGenevois/
Not suitable for strollers
Bus access: Line 7 - stop: Machilly Gare
Access by car: By car, reach Machilly north-east of Annemasse in the direction of Thonon (D1206). Park at Lac de Machilly, south parking lot.
Map references :
TOP 25 IGN 3428 AND
Classified as a Natura 2000 site, Les Voirons are an outstanding, protected area. It should be treated as a fragile place, which is home to some exceptional flora and fauna.
Make sure that you are properly equipped (appropriate shoes and clothing, water, etc.) before attempting these trails. Check the weather forecast before you leave. Do not attempt trails which are classed as difficult if you have young children with you.
1/ From "Lac de Machilly (Sud)", follow signs for "Signal des Voirons", passing successively through "Machilly (Gare)", "Chez Bussioz", "Borringes" and "Le Chamenard".
2/ At the "Le Chamenard" intersection, head for Signal des Voirons via Le Sauget. Follow the signs for "Signal des Voirons" at "Crêt Cavin", "Le Sauget", "Bois du Creux de Beule", "La Servette (Maison Forestière)", "La Servette" and "Crête des Voirons".
3/ At "Signal des Voirons", continue the loop following Le Chamenard via La Moutonnière. Then follow the signs for "Le Chamenard (Parking)" at the next points: "Notre Dame des Voirons", "Notre Dame des Voirons (Dessous)", "La Moutonnière", "Les Châbles", "Les Pesses", "Sous Crêt Cavin", "Les Granges (Bellevue)", "La Pierre du Cré".
4/ Once you have returned to "le Chamenard (parking)", continue towards the "Le Chamenard" signpost, then return to the starting point by the same route as the outward journey.
No. Pets are not allowed.