Altigraphs
2

Col du Portillon

North-eastern ascent from Bossòst
2 ways up
From Bossòst 8.5 km · 6.8% From Luchon 7.9 km · 8.0%
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Elevation profile

709 m → 1295 m
0–4% 4–6% 6–8% 8–10% 10–14% 14%+
Steepest kilometre: km 8 at 9.3% — peaks at 15.4%
Elevation inside a tunnel is unreliable — the survey reads the mountain above the road, not the road. Report a tunnel

Climb stats

579 m Ascent
8.49 km Length
6.82% Average
17% Maximum
1295 m Summit altitude
126 Difficulty

Kilometre by kilometre

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Km Altitude Gain Average Max Gradient
1 758 m +49 m 4.9% 6%
2 819 m +61 m 6.1% 8%
3 876 m +57 m 5.7% 8%
4 948 m +72 m 7.2% 8%
5 1028 m +80 m 8% 10%
6 1117 m +89 m 8.9% 10%
7 1181 m +64 m 6.4% 10%
8 1275 m +93 m 9.3% 17%
9 1295 m +20 m 4.1% 7%

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 126?

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

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Conditions at the summit

15°
Cloudy · feels like 16°
Wind 5 km/h SE
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