Altigraphs
2

Col du Portillon

Western ascent from Luchon — the hardest of the 2 ways up
2 ways up
From Bossòst 8.5 km · 6.8% From Luchon 7.9 km · 8.0%
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Elevation profile

652 m → 1289 m
0–4% 4–6% 6–8% 8–10% 10–14% 14%+
Steepest kilometre: km 8 at 12% — peaks at 21.4%
Elevation inside a tunnel is unreliable — the survey reads the mountain above the road, not the road. Report a tunnel

Climb stats

631 m Ascent
7.93 km Length
7.96% Average
25% Maximum
1289 m Summit altitude
170 Difficulty

Kilometre by kilometre

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Km Altitude Gain Average Max Gradient
1 698 m +46 m 4.6% 8%
2 788 m +90 m 9% 11%
3 864 m +76 m 7.6% 12%
4 920 m +56 m 5.6% 14%
5 1000 m +79 m 7.9% 10%
6 1096 m +96 m 9.6% 12%
7 1178 m +82 m 8.2% 11%
8 1289 m +111 m 12% 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 170?

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

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Conditions at the summit

15°
Partly cloudy · feels like 15°
Wind 3 km/h SE
Updated Just now
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