Altigraphs
Join Altigraphs
  • Save climbs to ride later
  • Add rider notes and photos
  • Add a missing climb or fix one
HC Where this climb is: Pyrénées-AtlantiquesNouvelle-Aquitaine, France

Somport

Northern ascent from Quartier Broca
Length
23.7 km
Height gain
1126 m
Average
4.7%
Steepest km
8.6%
Summit altitude
1630 m
Difficulty
193
2 ways up · this is the hardest Compare all 2

Elevation profile

498 m → 1630 m Touch or hover to inspect
Elevation profile: Somport from Quartier Broca
0–4% 4–6% 6–8% 8–10% 10–14% 14%+
Steepest km: km 20 at 8.6%

Climb analysis

Where the climbing is

0–4%
7.8 km
4–6%
8.0 km
6–8%
5.8 km
8–10%
1.5 km
10–14%
0.8 km
14%+
0.0 km

Hardest sustained

1 km · km 17.8–18.8
8.7%
2 km · km 16.8–18.8
7.9%
5 km · km 15.0–20.0
6.9%

Time to the top

1h 29 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%
1 521 m 1.8%
2 532 m 1.1%
3 560 m 2.7%
4 574 m 1.5%
5 607 m 3.3%
6 630 m 2.3%
7 663 m 3.4%
8 696 m 3.2%
9 754 m 5.8%
10 800 m 4.6%

Route map

Two fingers to pan
Directions
Satellite
Road surface not mapped yet Report a road type
No tunnels mapped Map a tunnel

About Somport

How long and how steep?
From Quartier Broca, Somport is 23.7 km long and climbs 1,126 m at an average of 4.7%, to a summit at 1,630 m. Its steepest kilometre, km 20, averages 8.6%.
How long does it take?
At 3 W/kg it takes about 1 h 29 min to reach the top, at 4 W/kg about 1 h 10 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 193. It's the hardest of the 2 ways up to Somport.
Where is it?
It's in Pyrénées-Atlantiques, Nouvelle-Aquitaine, France.

How hard is 193?

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

Help complete this climb

Riders’ photos, notes and corrections make every profile better.

Add a photo No photos yet — the last kilometre, the summit sign Write a rider note Traffic, water, where it really bites Map a tunnel Mark where the road goes underground Report a road type Not mapped yet — paved, unpaved or cobbles
Vote the best months to ride No votes yet
Nobody has voted yet Ridden this one? Tap the months you'd recommend to help other riders time it right.
Tap a month you'd recommend
Added by enancu · 1 contributor

Climbs nearby

Refuge de l'Abérouat From Lescun · starts 0.6 km away
10.2 km +937 m 9.2%
Col d'Ichère From Pont-Suzon · starts 10.5 km away
5.2 km +317 m 6.2%
Col de Marie-Blanque From Escot · starts 15.0 km away
9.1 km +703 m 7.7%
Col d'Aubisque From Laruns · starts 15.6 km away
16.4 km +1177 m 7.2%