Tour du Mont Blanc Variants: Col du Tricot, Col des Fours, Fenêtre d'Arpette

Travel Tips & Tricks

Embarking on the Tour du Mont-Blanc is much more than following a simple trail. It is entering an adventure where multiple paths are possible. Beyond the classic route, the TMB is dotted with "variants," alternative paths that significantly change the experience of a stage. More alpine, more demanding, more scenic, they are aimed at hikers who want to step off the main route for a closer encounter with high mountain terrain. As an agency specializing in treks in the Alps since 1983, we understand the importance of choosing the right itinerary. This article presents the main official TMB variants to help you understand their specificities and design a tour that truly suits you.

What is a variant on the TMB?
Col du Tricot variant: a spectacular start
Col des Fours variant: the TMB summit
Fenêtre d'Arpette variant: the ultimate challenge
How to choose your variant: expert advice
TMB tailored with Grand Angle

What is a variant on the TMB?

A variant is an alternative route to the classic path of a stage. It is generally more difficult, with greater elevation gain or more technical terrain (rocky passages, steep trails). Far from being simple shortcuts, variants are deliberate choices that allow discovering other landscapes, often wilder and more alpine. They require excellent physical condition, sure-footedness, and above all, great caution. Before embarking on one, it is essential to check weather conditions and the state of the trail (snow patches, etc.).

Col du Tricot variant: a spectacular start

This variant spices up the first stage between Les Houches and Les Contamines. Instead of following the Col de Voza, it offers a more aerial route. Crossing the Bionnassay Himalayan bridge and ascending the Col du Tricot (2120 m) provides direct and impressive views of the Bionnassay Glacier. It’s a challenging yet rewarding introduction, immediately setting the tone for a sporty trek.

Learn more about the Col du Tricot variant.

Col des Fours variant: the TMB summit

On the second stage, after the Col de la Croix du Bonhomme, this variant climbs to the Col des Fours (2665 m), the highest point of the entire Tour du Mont-Blanc. The atmosphere is mineral, wild, and the 360° view over the Vanoise and the south face of Mont Blanc is breathtaking. The following descent is steep and technical in a rocky scree. This option is reserved for very experienced hikers and only in perfectly dry weather.

Learn more about the Col des Fours variant.

Fenêtre d'Arpette variant: the ultimate challenge

TMB : La variante de la Fenêtre d'Arpette

Considered the most difficult of all variants, the Fenêtre d'Arpette appears on the Swiss stage between Champex and the Col de la Forclaz. It is a formidable ascent in the Val d'Arpette, ending in a block corridor to reach the Fenêtre d'Arpette (2665 m). The reward is a plunging, unforgettable view over the Trient Glacier. This option should only be attempted by experienced mountaineers, not prone to vertigo, and in perfect weather conditions.

Learn more about the Fenêtre d'Arpette variant.

How to choose your variant: expert advice

Choosing to take a variant should never be done lightly. Here are three key points to consider:

Your physical condition: Honestly assess your level and fatigue. A variant can turn a moderate stage into a very difficult day.
Weather and trail conditions: This is the most important factor. Fog, rain, or storms make these routes dangerous. Early in the season, lingering snow patches may require specific equipment (ice axe, crampons). Always check with refuges or professionals. For guidance, see our article on when to do the TMB.
Your desires: Are you looking for physical challenge, solitude, or the most spectacular panorama? Your motivation will guide your choice.

TMB tailored with Grand Angle

The Tour du Mont-Blanc is a personal adventure. That's why we offer different options to suit everyone. In our guided trips, the guide, an expert on the terrain, will decide whether to take a variant based on the group and conditions. In our self-guided options, like our 12-day full TMB, our detailed guides provide all the classic routes and variants, giving you all the keys to make an informed choice. From easy treks to more sporty routes, we design a journey that suits you.

Ready to chart your own path around the giant of the Alps? Contact our advisors to share your project.