The Col du Solude is a little-ridden, challenging climb in the French Alps, located directly opposite Alpe d’Huez in the Oisans.
It is best suited to experienced cyclists and is known for its steep gradients, narrow cliffside road, four tunnels, and a gravel summit section.
Unlike Alpe d’Huez, the Col du Solude is quiet, exposed, and remote — making it one of the most rewarding alternative climbs in the region when ridden in the right conditions.
What makes the Col du Solude different?
The Col du Solude stands out because of:
- Immediate steep gradients (up to 12% with no warm-up)
- Four tunnels carved into the rock
- Very narrow road sections with major exposure
- Unmaintained gravel near the summit
- No café, no sign, no crowds
This is not a climb you “tick off” — it’s one you experience.
Where is the Col du Solude?
The climb starts above Bourg d’Oisans, heading toward Villard-Notre-Dame, before continuing on gravel toward the Col du Solude and Villard Reymond.
It sits directly across the valley from Alpe d’Huez, offering unique views back toward the famous 21 bends.
Who should ride the Col du Solude?
This climb is best for:
- Confident, experienced road or all-road cyclists
- Riders comfortable with exposure and narrow roads
- Cyclists using good tyres (especially in damp conditions)
- Those seeking a true Alpe d’Huez alternative
⚠️ It is not recommended in poor weather or for inexperienced riders.
Are lights required for the tunnels?
Yes — front and rear lights are essential.
Until relatively recently, these tunnels were completely unlit. One tunnel is nearly 400 metres long, uphill, and can feel intimidating even with lighting installed.
Descending through the tunnels is strongly discouraged.
Is the Col du Solude gravel?
Yes.
The final kilometres beyond Villard-Notre-Dame transition onto rough, unmaintained gravel.
In wet conditions, this section becomes:
- Slippery
- Remote
- Difficult to exit safely
Choose tyres and weather carefully.
When is the best time to ride it?
The Col du Solude is best ridden:
- Late spring to early autumn (The road is not maintained or cleared of snow so beware it might not be passable until mid / end of June)
- In dry, clear conditions
- With stable weather
Poor weather dramatically increases both risk and difficulty.
Is there an easier alternative nearby?
Yes. If the Col du Solude feels too serious, the Allemond Loop is an excellent cycling alternative in the Oisans:
- Quiet roads
- Big alpine views
- No tunnels
- No gravel
- Ideal for relaxed cycling days
FREE GPX DOWNLOAD
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Watch the Ride
Col du Solude: The Oisans’ Untamed Alternative to Alpe d’Huez
