Alpe d'Huez, France: A Cyclist's Pilgrimage Guide to the Tour de France's Legendary 21 Hairpins

The Most Sacred 13.8 Kilometers of the Tour de France

Alpe d’Huez, located in the French Alps, stretches approximately 13.8 kilometers with a cumulative elevation gain of about 1,071 meters and an average gradient of 8.1%, featuring 21 hairpin turns. It is the most iconic climb in the Tour de France, with each bend displaying the nameplate of the stage winner from the corresponding year.

Route Data

The Steepest Opening

The cruelest part of Alpe d’Huez is not the middle section, but the “first kilometer”—from Bourg-d’Oisans, you immediately hit a steep climb of around 10%, and many riders blow up their pace right here. Golden rule: deliberately hold back your intensity at the start and save your energy for the remaining 19 turns.

Amateur Time-Trial Target Reference

Alpe d’Huez is the most popular climb in the world for cyclists to challenge themselves against the clock. The historical record for professional elites falls in the 37 to 41-minute range (monster performances at nearly 6 W/kg or above). Amateur riders can set their goals using the following reference:

Regardless of your target, the tactic is the same: on that first kilometer with its ~10% opening, you must deliberately hold back your intensity and distribute your energy across the remaining 19 turns. Blowing up your pacing in the opening is the most common failure script on this mountain.

The Meaning of the Turn Nameplates

Each of the 21 turns has a sign bearing the name of the Tour de France stage winner for the corresponding edition. Riding past these names is the most direct conversation with cycling history.

Itinerary and Season

June through September is the best season. The base is often the foothill town of Bourg-d’Oisans, from which you can also link up classic passes such as the Col du Galibier and the Col de la Croix de Fer to form a multi-day Alpine itinerary.

Notes

During peak season, there are extremely large numbers of cyclists and cars, so descending requires extreme caution. The high-altitude finish (approximately 1,860 meters) has highly changeable weather—bring a windbreaker.

The 21 turns of Alpe d’Huez are 21 reasons to make you want to give up, and also 21 chances to choose to keep going. When you ride through that final bend bearing a legendary name, you will understand: history is not something you see—it is something you write with your legs.

Related Reading

• Route Tactics: A Comprehensive Practical Guide to Power and Pacing Management for the Climbing Mechanics of the Hairpins at Alpe d’Huez, the Legendary Tour de France Mountain in the Alps
• Alpe d’Huez Guide: The Complete Guide to the Tour de France’s Most Famous 21 Hairpin Turns
• Conquering the French Alps: A Pilgrimage to the Classic Mountain Routes of the Tour de France
• 21 Hairpin Turns, 13.8 Kilometers: Why Alpe d’Huez Is the Most Pilgrimaged Climb in the World