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EN ES FR IT
HC Where this climb is: IsèreAuvergne-Rhône-Alpes, France

Col de Sarenne

Southern ascent from Lac du Chambon
GPX Profile
Length
12.9 km
Height gain
947 m
Average
7.3%
Steepest km
12.1%
Summit altitude
1999 m
Difficulty
257
2 ways up · this is the hardest Compare all 2

Elevation profile

1052 m → 1999 m Touch or hover to inspect
Elevation profile: Col de Sarenne from Lac du Chambon
0–4% 4–6% 6–8% 8–10% 10–14% 14%+
Steepest km: km 1 at 12.1%

Climb analysis

Where the climbing is

0–4%
2.5 km
4–6%
0.3 km
6–8%
2.5 km
8–10%
5.6 km
10–14%
2.0 km
14%+
0.0 km

Hardest sustained

1 km · km 0.0–1.0
12.1%
2 km · km 9.9–11.9
9.6%
5 km · km 7.7–12.7
8.8%

Time to the top

1h 08 at 3 W/kg · 70 kg rider + 8 kg bike, no wind
How this is calculated

Kilometre by kilometre

Export CSV
Km Altitude Gradient 0–15%
1 1173 m 12.1%
2 1174 m 0.2%
3 1247 m 7.3%
4 1338 m 9.0%
5 1378 m 4.0%
6 1409 m 3.1%
7 1483 m 7.4%
8 1564 m 8.1%
9 1638 m 7.4%
10 1725 m 8.7%

Route map

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Directions
Satellite
Road surface not mapped yet Report a road type
No tunnels mapped Map a tunnel

About Col de Sarenne

How long and how steep?
From Lac du Chambon, Col de Sarenne is 12.9 km long and climbs 947 m at an average of 7.3%, to a summit at 1,999 m. Its first kilometre is the steepest, at 12.1%.
How long does it take?
At 3 W/kg it takes about 1 h 08 min to reach the top, at 4 W/kg about 52 min (70 kg rider, 8 kg bike, no wind).
What category is it?
It's an HC (hors catégorie) climb, with a difficulty score of 257. It's the hardest of the 2 ways up to Col de Sarenne.
Where is it?
It's in Isère, Auvergne-Rhône-Alpes, France.

How hard is 257?

Difficulty score is length × gradient, weighted for the steepest kilometre.

Cormet de Roselend, Beaufort 257
Col de Vars, Guillestre 257
Col de Sarenne, Lac du Chambon 257
Alto del Nacimiento, Purchena 256
Superbagnères de Luchon, Bagnères-de-Luchon 255

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