Altigraphs
HC

Col de Sarenne

Southern ascent from Lac du Chambon — the hardest of the 2 ways up
2 ways up
From Lac du Chambon 12.9 km · 7.6% From L'Alpe d'Huez 8.1 km · 4.1%
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Elevation profile

1052 m → 1999 m
0–4% 4–6% 6–8% 8–10% 10–14% 14%+
Steepest kilometre: km 1 at 12.4% — peaks at 14.6%
Elevation inside a tunnel is unreliable — the survey reads the mountain above the road, not the road. Report a tunnel

Climb stats

983 m Ascent
12.90 km Length
7.62% Average
79% Maximum
1999 m Summit altitude
257 Difficulty

Kilometre by kilometre

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Km Altitude Gain Average Max Gradient
1 1173 m +124 m 12.4% 79%
2 1174 m +40 m 4% 22%
3 1247 m +97 m 9.7% 38%
4 1338 m +92 m 9.2% 30%
5 1378 m +48 m 4.8% 15%
6 1409 m +42 m 4.2% 27%
7 1483 m +75 m 7.5% 22%
8 1564 m +83 m 8.3% 25%
9 1638 m +76 m 7.6% 25%
10 1725 m +89 m 8.9% 25%

Route map

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Photos

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Rider notes

What it is actually like, from people who have ridden it
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How hard is 257?

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

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Conditions at the summit

11°
Partly cloudy · feels like 7°
Wind 5 km/h N
Updated 4 min ago
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