Altigraphs
HC

Col de l'Iseran

Southern ascent from Bessans — the hardest of the 2 ways up

Elevation profile

1783 m → 2764 m
0–4% 4–6% 6–8% 8–10% 10–14% 14%+
Steepest kilometre: km 13 at 9.7% — peaks at 11%
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Climb stats

987 m Ascent
13.79 km Length
7.16% Average
14% Maximum
2764 m Summit altitude
230 Difficulty

Kilometre by kilometre

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Km Altitude Gain Average Max Gradient
1 1813 m +30 m 3% 7%
2 1894 m +81 m 8.1% 9%
3 1977 m +83 m 8.3% 9%
4 2062 m +85 m 8.5% 10%
5 2123 m +61 m 6.1% 9%
6 2164 m +42 m 4.2% 9%
7 2253 m +89 m 8.9% 10%
8 2330 m +77 m 7.7% 11%
9 2423 m +93 m 9.3% 11%
10 2485 m +63 m 6.3% 10%

Route map

Paved Unpaved Cobblestone Unknown
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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 230?

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

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Conditions at the summit

Clear · feels like 3°
Wind 4 km/h N
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