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Col de Plan Bois direct via La Frasse - Cycling itinerary
Description
The Col de Plan Bois on this side of the mountain offers a great sporting challenge (6 km at 10%!). Much more confidential than its neighbor the Croix-Fry, it's well worth the effort, as it's all the more tranquil.
It's a mythical pass, and all those who have passed it have fond memories of it.
Cycling tip:
Take care when descending these narrow roads.
For a break on the Col de Plan Bois :
L'Auberge de Plan Bois, isolated at the foot of the Sulens.
Ideas for accommodation in Thônes with adapted services:
- L'Hôtel de l'Hermitage, with laundry facilities.
- The "Chambres Au Pré" on the outskirts of Thônes towards the Aravis mountains.
Technical Information
Altimetric profile
Starting point
Steps
Additional information
Tips
Annecy Mountains topo-guide, on sale for €5 at the Thônes Cœur des Vallées Tourist Office.
Updated by
Office de Tourisme de Thônes Cœur des Vallées - 13/03/2026
www.thonescoeurdesvallees.com
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Environments
Mountain location
Open period
All year round daily.
Contact
Phone : 04 50 02 00 26
Email : infos@thonescoeurdesvallees.com
Website : https://www.thonescoeurdesvallees.com
Type of land
Hard coating (tar, cement, flooring)
Location complements
Departure from the Tourist Office, opposite the church.
Topo guides and map references
Topo guides references :
Annecy Mountains topo-guide, on sale for €5 at the Thônes Cœur des Vallées Tourist Office.
Guidebook with maps/step-by-step
1. Thônes > Les Clefs > La Frasse > Col de Plan Bois: from the Tourist Office, take the D12 to the right of the church. Leave the D12 and turn left towards Les Clefs / Col de Plan Bois, on the D212. Keep right on the main road towards Col de Plan Bois.
2. Col de Plan Bois > Praz Riand > Les Clefs: from the Col, switch to the Nors side. At the hamlet of Praz Riand, turn left towards Les Clefs. Join Les Clefs then the D12.
3. Les Clefs > Thônes: from the village of Les Clefs, take the outward route in the opposite direction back to Thônes.
Data author
