Altigraphs
HC Isère · Auvergne-Rhône-Alpes, France

Col du Glandon

South-western ascent from Barrage du Verney (Allemont)
2 ways up
From Barrage du Verney (Allemont) 25.7 km · 5.5% From Saint-Étienne-de-Cuines 20.1 km · 7.2%
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Elevation profile

765 m → 1923 m
0–4% 4–6% 6–8% 8–10% 10–14% 14%+
Steepest kilometre: km 15 at 12.7% — peaks at 21.8%
Elevation inside a tunnel is unreliable — the survey reads the mountain above the road, not the road. Report a tunnel

Climb stats

1423 m Ascent
25.70 km Length
5.54% Average
72% Maximum
1923 m Summit altitude
313 Difficulty

Kilometre by kilometre

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Km Altitude Gain Average Max Gradient
1 768 m +11 m 1.1% 27%
2 768 m +24 m 2.4% 25%
3 812 m +62 m 6.2% 36%
4 793 m +14 m 1.4% 17%
5 890 m +111 m 11.1% 54%
6 955 m +97 m 9.7% 38%
7 1027 m +86 m 8.6% 36%
8 1119 m +96 m 9.6% 24%
9 1228 m +112 m 11.2% 32%
10 1270 m +54 m 5.4% 15%

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 313?

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

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Location

Country France
Region Auvergne-Rhône-Alpes
Province Isère

Conditions at the summit

10°
Clear · feels like 6°
Wind 6 km/h SW
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