Altigraphs

Explore

Preferences

EN ES FR IT

Add a climb

Preferences

EN ES FR IT

Popular climbs Pico del Veleta por Collado de las Sabinas Pico del Veleta por Canales Pico del Veleta

Or browse

Map Regions

Join Altigraphs

Save climbs to ride later
Add rider notes and photos
Add a missing climb or fix one

Add a climb

Preferences

EN ES FR IT

HC IsèreAuvergne-Rhône-Alpes, France

Col de la Croix de Fer

South-western ascent from Allemond

Save

GPX

Length: 28.9 km
Height gain: 1334 m
Average: 4.6%
Steepest km: 9.8%
Summit altitude: 2064 m
Difficulty: 321

Isère · 2nd of the five hardest

3 ways up Compare all 3

Allemond 28.9 km, 4.6% average, 1334 m height gain
Le Verney 25.8 km, 5.0% average, 1295 m height gain
Saint-Étienne-de-Cuines 22.8 km, 6.9% average, 1580 m height gain

Elevation profile

730 m → 2064 m Touch or hover to inspect

0–4% 4–6% 6–8% 8–10% 10–14% 14%+

Steepest km: km 10 at 9.8%

Climb analysis

Where the climbing is

0–4%: 9.0 km
4–6%: 5.6 km
6–8%: 7.5 km
8–10%: 3.8 km
10–14%: 3.0 km
14%+: 0.0 km

Hardest sustained

1 km · km 14.8–15.8: 11.4%
2 km · km 7.7–9.7: 10.4%
5 km · km 4.8–9.8: 8.7%

Time to the top

1h 58 at 3 W/kg · 70 kg rider + 8 kg bike, no wind

How this is calculated

Kilometre by kilometre

Export CSV

Km	Altitude	Gain	Gradient	Max
1	770 m	+40 m	4.0%	13.0%
2	767 m	−3 m	−0.3%	14.2%
3	768 m	+1 m	0.1%	17.2%
4	807 m	+39 m	3.9%	28.8%
5	827 m	+19 m	1.9%	22.0%
6	906 m	+79 m	7.9%	21.4%
7	976 m	+70 m	7.0%	31.4%
8	1057 m	+82 m	8.2%	24.8%
9	1150 m	+92 m	9.2%	20.2%
10	1248 m	+98 m	9.8%	30.0%
11	1274 m	+26 m	2.6%	13.8%
12	1270 m	−4 m	−0.4%	31.4%
13	1199 m	−71 m	−7.1%	3.6%
14	1257 m	+58 m	5.8%	23.8%
15	1335 m	+78 m	7.8%	23.2%
16	1433 m	+98 m	9.8%	44.8%
17	1503 m	+70 m	7.0%	27.8%
18	1590 m	+87 m	8.7%	13.4%
19	1651 m	+61 m	6.1%	21.4%
20	1706 m	+55 m	5.5%	18.0%
21	1742 m	+37 m	3.7%	13.6%
22	1790 m	+47 m	4.7%	5.2%
23	1756 m	−34 m	−3.4%	36.4%
24	1738 m	−18 m	−1.8%	8.0%
25	1810 m	+73 m	7.3%	8.0%
26	1888 m	+78 m	7.8%	11.0%
27	1952 m	+64 m	6.4%	9.2%
28	2011 m	+58 m	5.8%	12.6%
29	2064 m	+53 m	6.1%	6.8%

Route map

Two fingers to pan

Directions

Satellite

Road surface not mapped yet Report a road type

No tunnels mapped Map a tunnel

About Col de la Croix de Fer

How long and how steep?: From Allemond, Col de la Croix de Fer is 28.9 km long and climbs 1,334 m at an average of 4.6%, to a summit at 2,064 m. Its steepest kilometre, km 10, averages 9.8%.
How long does it take?: At 3 W/kg it takes about 1 h 58 min to reach the top, at 4 W/kg about 1 h 32 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 321.
Where is it?: It's in Isère, Auvergne-Rhône-Alpes, France.

How hard is 321?

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

Telégrafo, Granada 322

Col d’Aubisque, Arthez-d’Asson 321

Col de la Croix de Fer, Allemond 321

Col du Grand Colombier, Culoz 320

Col du Tourmalet, Sainte-Marie de Campan 320

Around here

Map of climbs around here Search every climb

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

Edit climb data Report an error History

Added by altigraphs · 1 contributor

Climbs nearby

HC 1839 m 730 m

Alpe D'Huez via Villard-Reculas From La Fonderie · starts here

20.8 km +1109 m 5.3%

HC 1923 m 773 m

Col du Glandon From Allemont · starts here

25.7 km +1151 m 4.5%

2 1335 m 785 m

Station d'Oz en Oisans From Oz · starts 1.1 km away

7.6 km +550 m 7.2%

HC 2064 m 769 m

Col de la Croix de Fer From Le Verney · starts 1.8 km away

25.8 km +1295 m 5.0%