Plateau des Glières – Five Cycling Routes


A few years ago I started writing articles at about the best cycling climbs in France ignored by the Tour de France. See here or here for examples. That first article in 2011 had Mont du Chat and Grand Colombier at the top of the list.

Happily, since then, Grand Colombier has become almost a Tour regular (’12, ’14, ’17), and Mont du Chat featured in the 2017 Tour after only one previous appearance more than two decades ago.

But that list also included the excellent Plateau/Col des Glières. On the very edge of the north Alps, it has still sadly never appeared in the Tour de France. This article will describe the two road bike climbs to the col as well as three col-filled mountain bike routes in the massif (all shown on map below).

During WW2, this plateau was generally inaccessible in winter and the Maquis (French Resistance) used it as a base and for weapon drops from the English. It was the site of one of the biggest battles between the Nazis and the Maquis, with 149 of the French resistance killed in March 1944 (more here). There is a museum, an informative signed walk, and the Monument National de la Resistance.

Monument National de la Resistance (can go inside)

By Road Bike

The West Side:

The Red route (counter-clockwise). Climb starts near Thorens-Glières.

This is the “easier” of the two paved sides. But it is steadily 9% or so for seven kilometres. Plenty of hairpins, it’s a very fun climb. At the top of the main ascent is a col: Le Collet. Then a small descent and an easy couple of kilometres to Col des Glières – next to the museum and National Monument. There are several restaurants and plenty of parking for any one just looking to hike.

My buddy Jens

In winter, Col des Glières is probably my favourite cross-country ski location. Beautiful trails at all difficulty levels.

The East Side:

The Red route (clockwise). Climb starts near Le-Petit-Bornand.

This is the crazy (paved) side of Col des Glières. Just look at that profile. It is very difficulty to find a steeper paved 6 kilometre stretch anywhere. The sign at the bottom proudly announces 5.8 kilometres at 11.5% average. Ouch! But it’s quiet, and beautiful. A good place to suffer.

The paved road ends at the top of the steep stuff. Then two “slightly” uphill gravel kilometres to the geographic Col.

Steep but beautiful

Here is a very old post with a shitty old video – but a great soundtrack. 🙂

The Gravel at the Summit

The red loop assumes one crosses the plateau at the summit of the col. But there is roughly two kilometres of gravel across the Plateau linking the two paved climbs. BUT it is great quality gravel, fine on a road bike. See top photo or the photo below:

2 km gravel traverse

In fact, this is one of my favourite winter climbs. The paved roads are kept open in winter to facilitate the cross-country skiing (video). So often in winter, I wait for a nice sunny day and cycled up and traverse the snow covered gravel stretch on mountain bike (see here).

By Mountain Bike

Chalets des Auges – High Above Glières

The pink route

This hyper-quiet mountain bike route starts in Entremont and climbs high above the plateau on a deserted gravel farm route (1765 metres). It’s a tricky descent down to the Plateau, but fabulous. See here.

getting higher

getting higher

Gravel Col Hunting

The Blue Route

This mountain bike route enters the massive from the north passing a couple of gravel cols, then enters a smaller valley just north of the Plateau. A touch of not-crazy hiking up to Col du Spée makes for a quiet, creative, excellent loop. See here.

More Gravel Col Hunting

The green route

A great but challenging “exploration” loop on the north edge of the same massif as Plateau des Glières. To reach the high point – Col de Sur Cou (1605 metres) – it’s first a tiny paved road, then steep gravel, and finally trails. Fabulous. Details here. The route includes Col des Chasseurs (Hunters Pass) – how great is that for col hunters? 😉 Note, the route finishes on an incredible ridge road above the little ski station of Orange – I’ve marked it on the map with a star.

Final Thoughts

Dear Monsieur Prudhomme: it’s a shame that Plateau des Glières has never appeared in the Tour de France. If there isn’t enough money for this historic and important French location to be a summit finish, then remember: it’s easy to traverse the gravel summit.


About Author

Happiest while cycling uphill.


  1. Well, Monsieur Prudhomme must have read your plea in the final thoughts. Not sure which way, but stage 10 2018 includes one of the climbs and the gravel. Looking forward to watching that one !

  2. More to the point, all of us non-pros can go and ride it too, since the Etape du Tour route is doing stage 10. Entries open Monday!!

  3. peter aelbers on

    Hello Will, you were so right about the tour de france. But in the long end you might regret that the tour was there this year. It might be crowded in the future since we are all planning to do these climbs.
    Which village or town would you suggest as starting point for 3 or 4 rides or an extended weekend?
    greetz Peter

  4. Hello Will,
    Our club did col the Glières a few weeks ago. The plan was to do the steep east side. It wasn’t until the descent that I realised that we did the easier west side, Luckily. I don’t think I would have managed the steep climb. What a beast! We had a great stay in La Clusaz, good hotel, good food, friendly and a very nice region to go biking, almost as clean as La Suisse. We will be back!

Leave A Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Do NOT follow this link or you will be banned from the site!