Les 2 Alpes to Alpe d'Huez via Lac du Chambon

A route that includes the iconic Alpe d'Huez's 21 hairpin bends

featured in Cycling Routes Updated 15 April 2025

Les 2 Alpes - Lac du Chambon - Alpe d'Huez loop

This route links two of the most famous cycling bases in the Alps - Les 2 Alpes and Alpe d'Huez - by descending into the Oisans valley, looping through Bourg d'Oisans, and climbing the legendary 21 bends. A classic Tour de France experience with varied terrain and stunning scenery.

From Les 2 Alpes

Distance: 85km to 90km
Elevation gain: around 2,000m
Average gradient: 8.2% (but steeper in sections)

Route description:

• descent from Les 2 Alpes to Lac du Chambon is fast and winding on the D213 that brings you to the dam - it can be steep and is shaded in the morning so take care
• join the D1091 west towards Bourg d'Oisans - a relatively flat stretch that's a good warm-up before the big climb
• the 21 bends climb begins in Bourg d'OIsans and is a relentless climb to Alpe d'Huez (1,860m)
• the bends are all numbered and named after past Tour de France winners, with the earliest ones being the steepest (around 10%) before easing after bend six.
• you can descend the same way or take the quieter alternative route via Villard-Reculas
• the final ascent back up to Les 2 Alpes is via the D213, a bit tough after such a big day but it's steady

 

Tip:
take a breather in the village of Huez (around bend six or seven) - there's a fountain and a café