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

Col de L'Iseran

North-western ascent from Val d'Isere
GPX Profile
Length
16.1 km
Height gain
937 m
Average
5.8%
Steepest km
7.7%
Summit altitude
2764 m
Difficulty
168
2 ways up Compare all 2

Elevation profile

1827 m → 2764 m Touch or hover to inspect
Elevation profile: Col de L'Iseran from Val d'Isere
0–4% 4–6% 6–8% 8–10% 10–14% 14%+
Steepest km: km 16 at 7.7%

Climb analysis

Where the climbing is

0–4%
2.8 km
4–6%
4.0 km
6–8%
9.1 km
8–10%
0.3 km
10–14%
0.0 km
14%+
0.0 km

Hardest sustained

1 km · km 9.6–10.6
7.8%
2 km · km 14.1–16.1
7.5%
5 km · km 11.1–16.1
6.7%

Time to the top

1h 07 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 1858 m 3.1%
2 1904 m 4.7%
3 1973 m 6.9%
4 2030 m 5.7%
5 2063 m 3.3%
6 2131 m 6.8%
7 2198 m 6.7%
8 2259 m 6.1%
9 2319 m 6.0%
10 2355 m 3.6%

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 L'Iseran

How long and how steep?
From Val d'Isere, Col de L'Iseran is 16.1 km long and climbs 937 m at an average of 5.8%, to a summit at 2,764 m. Its steepest kilometre, km 16, averages 7.7%.
How long does it take?
At 3 W/kg it takes about 1 h 07 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 168.
Where is it?
It's in Savoy, Auvergne-Rhône-Alpes, France.

How hard is 168?

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

Alto de La Corredoira, San Martín de Ondes 169
Collado/Colláu Brañalengua, Saja 168
Col de L'Iseran, Val d'Isere 168
Le Pleynet, Allevard 168
Collado Agua de los Perros, Charco del Aceite 168

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Added by manunogueiramartinez2010 · 1 contributor

Climbs nearby

Col de l'Iseran From Bonneval-sur-Arc · starts 10.1 km away
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Plan du Lac From Val Cenis · starts 22.6 km away
15.0 km +1028 m 6.9%