From Saint-Romain-au-Mont-d'Or
Minor road
Col du Mont Thou — 522 m
Col du Mont Thou, 522 m, in Rhône. Main climb: 5.2 km at 6.8% average, 358 m of climbing from Saint-Romain-au-Mont-d'Or.
At a glance
- Distance
- 5.2 km
- Elevation gain
- 358 m
- Average gradient
- 6.8 %
- Difficulty index
- 2.4 Easy
Figures for the main climb (From Saint-Romain-au-Mont-d'Or). The other climbs are further down.
Location
- Department
- Rhône
- Altitude
- 522 m
- Coordinates
- 45.83768, 4.79908
Map of the climbs
- From Saint-Romain-au-Mont-d'Or
- From Lyon
- From Fleurieu-sur-Saône
- From Curis-au-Mont-d'Or
Cycling ascents
| Main climb | Distance | Elevation gain | Average gradient | Steepest 500 m | Difficulty index |
|---|---|---|---|---|---|
| From Saint-Romain-au-Mont-d'Or | 5.2 km | 358 m | 6.8 % | 11.4 % | 2.4 Easy |
| From Lyon | 6.5 km | 346 m | 5.3 % | 9.8 % | 1.8 Easy |
| From Fleurieu-sur-Saône | 8.1 km | 363 m | 4.5 % | 16.7 % | 1.6 Easy |
| From Curis-au-Mont-d'Or | 6.8 km | 361 m | 5.3 % | 10.5 % | 1.8 Easy |
Scroll the table sideways to see every column.
- 10% and above
- 8 to 10%
- 6 to 8%
- 4 to 6%
- under 4%
From Lyon
Minor departmental road
From Fleurieu-sur-Saône
Minor road
From Curis-au-Mont-d'Or
Departmental road
4 ascents proposed here — other ways up this col remain possible.
Distances and elevation gains derived from the OpenStreetMap road network and a digital terrain model, measured on the very profile shown here.
Figures computed on 7 September 2026.
Chains with
- Col de la Croix de Presles 526 m
- Col du Verdun 585 m
- La Croix Vitaise 435 m
Cols one of the climbs above actually rides over — not merely neighbours as the crow flies.
Cols nearby
- Col de la Croix du Ban 602 m · 14 km
- Col de la Luère 715 m · 16 km
- Col des Brosses 867 m · 24 km
- Col du Chêne 704 m · 25 km
- Col du Joncin 698 m · 27 km
- Col de la Croix Papin 636 m · 27 km
Straight-line distances, not road distances. The cols a climb actually rides over are listed above.
Frequently asked questions
How long is the climb to Col du Mont Thou?
The hardest climb of Col du Mont Thou, from Saint-Romain-au-Mont-d'Or, is 5.2 km long for 358 m of ascent, i.e. 6.8% average.
What is the steepest part of Col du Mont Thou?
The steepest 500 m sits at 11.4%, and the hardest kilometre is the 4th, at 9.3%.
Col du Mont Thou: add this col to your collection
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