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HC Pyrénées-AtlantiquesNouvelle-Aquitaine, France

Col de la Pierre Saint Martin

Northern ascent from Lanne en Barétous — the hardest of the 3 ways up

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GPX

Length: 26.4 km
Height gain: 1447 m
Average: 5.5%
Steepest km: 14.5%
Summit altitude: 1763 m
Difficulty: 455

3 ways up · this is the hardest Compare all 3

Lanne en Barétous 26.4 km, 5.5% average, 1447 m height gain
Licq-Athérey 25.5 km, 5.7% average, 1463 m height gain
South-western ascent 14.2 km, 5.4% average, 771 m height gain

Elevation profile

316 m → 1763 m Touch or hover to inspect

0–4% 4–6% 6–8% 8–10% 10–14% 14%+

Steepest km: km 13 at 14.5%

Climb analysis

Where the climbing is

0–4%: 11.3 km
4–6%: 2.6 km
6–8%: 2.3 km
8–10%: 5.3 km
10–14%: 4.0 km
14%+: 1.0 km

Hardest sustained

1 km · km 12.6–13.6: 18.6%
2 km · km 12.1–14.1: 13.9%
5 km · km 8.6–13.6: 11.5%

Time to the top

1h 55 at 3 W/kg · 70 kg rider + 8 kg bike, no wind

How this is calculated

Kilometre by kilometre

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Km	Altitude	Gain	Gradient	Max
1	328 m	+12 m	1.2%	2.0%
2	343 m	+15 m	1.5%	2.2%
3	361 m	+18 m	1.8%	2.6%
4	382 m	+21 m	2.1%	2.8%
5	406 m	+24 m	2.4%	3.6%
6	438 m	+33 m	3.3%	7.0%
7	505 m	+67 m	6.7%	11.6%
8	585 m	+80 m	8.0%	12.2%
9	693 m	+108 m	10.8%	13.4%
10	800 m	+107 m	10.7%	14.6%
11	896 m	+96 m	9.6%	16.6%
12	986 m	+90 m	9.0%	10.6%
13	1131 m	+145 m	14.5%	25.2%
14	1265 m	+134 m	13.4%	19.4%
15	1305 m	+41 m	4.1%	7.6%
16	1308 m	+3 m	0.3%	1.2%
17	1317 m	+10 m	1.0%	3.4%
18	1269 m	−48 m	−4.8%	0.0%
19	1231 m	−37 m	−3.7%	6.0%
20	1304 m	+72 m	7.2%	12.6%
21	1401 m	+97 m	9.7%	13.4%
22	1486 m	+85 m	8.5%	11.6%
23	1561 m	+75 m	7.5%	11.0%
24	1643 m	+82 m	8.2%	11.2%
25	1692 m	+49 m	4.9%	12.0%
26	1763 m	+71 m	7.1%	11.0%
27	1763 m	0 m	0.0%	5.0%

Route map

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Directions

Road surface not mapped yet Report a road type

No tunnels mapped Map a tunnel

How hard is 455?

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

El Teide, Los Cristianos 465

Laguna de la Sobia Solo Btt y Gravel, San Salvador 465

Col de la Pierre Saint Martin, Lanne en Barétous 455

Col du Telegraphe - Galibier, Saint Michel de Maurienne 455

Colle Fauniera via Colle d'Esischie, Pradleves 455

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