Col de Porte

from Grenoble · French Alps, France

Gradient:

<4%

4–7%

7–10%

10–12%

>12%

Approach route

GRADIENT PROFILE

<4%4–7%7–10%10–12%>12%

Km-by-km average gradient from Copernicus GLO-30 elevation data along the road.

The Grenoble approach to Col de Porte covers 16.8 km at 6.6% average, 1 112 m of ascent, with pitches to 14.1%. Its steepest kilometre averages 12.6% near km 7.9. On the Fiets scale this side rates 7.4. It is the tougher of the climb's two approaches.

Surface

Asphalt99%

Gravel1%

Verified from OpenStreetMap surface data along the climb.

RIDE THE CLIMB

View at km 0.8 — Photo by sogefi / Mapillary (CC-BY-SA 4.0) Source

View at km 1.3 — Photo by sogefi / Mapillary (CC-BY-SA 4.0) Source

View at km 1.8 — Photo by sogefi / Mapillary (CC-BY-SA 4.0) Source

View at km 2.3 — Photo by sogefi / Mapillary (CC-BY-SA 4.0) Source

View at km 2.8 — Photo by sogefi / Mapillary (CC-BY-SA 4.0) Source

View at km 4.3 — Photo by sogefi / Mapillary (CC-BY-SA 4.0) Source

View at km 4.8 — Photo by sogefi / Mapillary (CC-BY-SA 4.0) Source

View at km 5.3 — Photo by sogefi / Mapillary (CC-BY-SA 4.0) Source

View at km 5.9 — Photo by sogefi / Mapillary (CC-BY-SA 4.0) Source

View at km 7.4 — Photo by joostjakob / Mapillary (CC-BY-SA 4.0) Source

View at km 7.9 — Photo by sogefi / Mapillary (CC-BY-SA 4.0) Source

View at km 8.4 — Photo by sogefi / Mapillary (CC-BY-SA 4.0) Source

View at km 8.9 — Photo by sogefi / Mapillary (CC-BY-SA 4.0) Source

View at km 9.4 — Photo by sogefi / Mapillary (CC-BY-SA 4.0) Source

View at km 10.4 — Photo by sogefi / Mapillary (CC-BY-SA 4.0) Source

View at km 11.5 — Photo by joostjakob / Mapillary (CC-BY-SA 4.0) Source

View at km 13 — Photo by eric_s / Mapillary (CC-BY-SA 4.0) Source

View at km 14.5 — Photo by joostjakob / Mapillary (CC-BY-SA 4.0) Source

View at km 15.5 — Photo by joostjakob / Mapillary (CC-BY-SA 4.0) Source

View at km 16.8 — Photo by quiwy / Mapillary (CC-BY-SA 4.0) Source

FROM GRENOBLE

Distance

16.8km

Elevation gain

1112m

Avg gradient

6.6%

Max gradient

14.1%

Summit

—

Category

CAT 1

OTHER APPROACHES

Saint-Pierre-de-Chartreuse

8.1 km · 6.4%

NEARBY CLIMBS

Col de Palaquit

1154m

Col de la Charmette

1261m

Col du Coq

1434m

Col de Vence

782m

Col de Couz

636m

RIDE IT FROM

Grenoble

12 km from the climb · 217 m elev

Bourg-d'Oisans

33 km from the climb · 728 m elev

French Alps

Region guide