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HC TurinPiedmont, Italy

Col du Mont-Cenis

South-eastern ascent from Susa — the hardest of the 4 ways up

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GPX

Length: 31.2 km
Height gain: 1581 m
Average: 5.1%
Steepest km: 8.5%
Summit altitude: 2066 m
Difficulty: 347

4 ways up · this is the hardest Compare all 4

Show all 4 ways up

Susa 31.2 km, 5.1% average, 1581 m height gain
Susa 29.8 km, 5.2% average, 1549 m height gain
Val-Cenis 16.1 km, 4.9% average, 792 m height gain
Lanslebourg 9.9 km, 6.9% average, 685 m height gain

Elevation profile

485 m → 2096 m Touch or hover to inspect

0–4% 4–6% 6–8% 8–10% 10–14% 14%+

Steepest km: km 6 at 8.5%

Climb analysis

Where the climbing is

0–4%: 9.5 km
4–6%: 3.2 km
6–8%: 11.3 km
8–10%: 7.3 km
10–14%: 0.0 km
14%+: 0.0 km

Hardest sustained

1 km · km 4.9–5.9: 8.6%
2 km · km 3.7–5.7: 8.3%
5 km · km 3.4–8.4: 8.1%

Time to the top

2h 04 at 3 W/kg · 70 kg rider + 8 kg bike, no wind

How this is calculated

Kilometre by kilometre

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Km	Altitude	Gain	Gradient	Max
1	493 m	+8 m	0.8%	2.0%
2	536 m	+43 m	4.3%	8.6%
3	602 m	+66 m	6.6%	8.5%
4	685 m	+82 m	8.2%	9.0%
5	764 m	+80 m	8.0%	9.4%
6	849 m	+85 m	8.5%	9.6%
7	927 m	+79 m	7.9%	8.6%
8	1009 m	+82 m	8.2%	8.8%
9	1067 m	+58 m	5.8%	8.8%
10	1088 m	+21 m	2.1%	4.4%
11	1153 m	+66 m	6.6%	9.6%
12	1232 m	+78 m	7.8%	8.4%
13	1314 m	+82 m	8.2%	8.8%
14	1395 m	+81 m	8.1%	9.0%
15	1472 m	+77 m	7.7%	8.8%
16	1539 m	+67 m	6.7%	9.2%
17	1618 m	+79 m	7.9%	9.4%
18	1692 m	+74 m	7.4%	8.6%
19	1723 m	+30 m	3.0%	7.0%
20	1770 m	+47 m	4.7%	9.6%
21	1843 m	+74 m	7.4%	9.0%
22	1908 m	+65 m	6.5%	8.6%
23	1968 m	+60 m	6.0%	7.0%
24	2033 m	+65 m	6.5%	7.4%
25	2029 m	−3 m	−0.3%	7.0%
26	2090 m	+61 m	6.1%	7.4%
27	2094 m	+4 m	0.4%	1.8%
28	2074 m	−21 m	−2.1%	0.0%
29	2078 m	+4 m	0.4%	4.8%
30	2051 m	−27 m	−2.7%	4.0%
31	2059 m	+8 m	0.8%	3.7%
32	2066 m	+7 m	4.2%	4.4%

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About Col du Mont-Cenis

How long and how steep?: From Susa, Col du Mont-Cenis is 31.2 km long and climbs 1,581 m at an average of 5.1%, to a summit at 2,066 m. Its steepest kilometre, km 6, averages 8.5%.
How long does it take?: At 3 W/kg it takes about 2 h 04 min to reach the top, at 4 W/kg about 1 h 37 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 347. It's the hardest of the 4 ways up to Col du Mont-Cenis.
Where is it?: It's in Turin, Piedmont, Italy.

How hard is 347?

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

Mont Caro, Tortosa 348

Passo dello Stelvio, Bormio 347

Col du Mont-Cenis, Susa 347

Nufenen Pass, Ulrichen 347

Col de la Loze via Courchevel, Brides les Bains 346

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