Vallorcine
Valley trails - There are trails that run right through the Vallorcine valley from the Col du Mtets to the Swiss Border. Most are easy although one trail from Vallorcine village to the Swiss border on the right hand side is particularly tough.
Buet/Loriaz - A steep 4x4 track zig-zags its' way 800m up the south facing side of the valley. It ends at an unridable section of about 200m. But walk the bike for those 200m to the Chalet de Loriaz for a drink and a picnic stop. Beautiful views !!! 1hr from Buet to Chalets - very tough uphill. Descend the same way. Advanced riding.
Vallorcine - Col des Posettes - Le Tour
Behind the Vallorcine train station a 4x4 track heads up the mountainside. It becomes tough in a few steeper sections - especially near the top !! At the chairlift station ( halfway ) it is possible to via left on a 4x4 track which leads to La Jeux in Switzerland. Turn right on the 4x4 track from the chairlift station to reach the Col des Posettes. Spectacular views of the Chamonix valley !!! All downhill from here. 1hr 30mins from Vallorcine to Col des Posettes. 30 mins descent but take your time. You earned it !!!
Les Houches
Col de Voza and le Prarion - Take the Bellevue lift to the top station (1800m). From there go down to the right towards the Col de Voza. Then ride to the summit of the Prarion (1966m). On the west side of the Prarion there is a track, called the corkscrew, that goes down in zig-zags to St. Gervais.
From the Col de Voza a steep 4x4 track goes into the Bionnassy Valley with fantastic views of the Bionnassy glacier. The track becomes road and winds through some villages ending up in St. Gervais. You can then get the train back up the valley to Chamonix.
Lognan
Lognan - Argentiere
Take the Grands Mtets cable car in Argentiere to the mid station ( Lognan ). From Lognan the track is the home piste in winter. Exit the station and turn immediately left. It's very wide but extremely rough all the way to Argentiere. It drops 800m but feels like 8000m. Your bike may not survive the beating it will get.. 1hr descent from Lognan - only for the mad bikers with strong bikes.
Lognan - Le Lavancher
From Lognan take the first right 4x4 track which heads off towards Plan Joran. The 4x4 track eventually leads into a large bowl with views of Chamonix. It turns into a small walking track, then exits the plateau to start the descent into Le Lavancher. The track is technical with many zig-zags. 1hr from Lognan - a very tough and technical ride.
Flegere/Brevent
Planpraz - Chamonix
Take the telecabine from Chamonix to Planpraz ( 2000m ) The 4x4 track is located over a small rise behind the station. It descends rapidly to the left. The track is steep and very tough on body and bike. The trail becomes easier as it descends. Try it. The views are magnificent. 1hr decent from Planpraz - for advanced riders.
La Flegere - Les Praz
From Les Praz take the La Flegere cable car to the top. ( 1877m ). From here the views of the Mer de Glace and the Grande Jorasses are incredible. From the station take the 4x4 track on the immediate left outside the station. This is another steep track through the trees to the valley floor. 1hr descent from the station. - for advanced riders.
