Bibliothèque des cols
Les ascensions célèbres du cyclisme
Profils détaillés des cols qui font la légende du cyclisme — longueur, pente moyenne, dénivelé, historique des courses et conseils d'allure.
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4105 cols
Roncevaux Pass
8.2 km at 8.51% average with a brutal 33.95% maximum — Roncevaux Pass is a Category 1 beast that demands early restraint and careful gear selection.
Profil
Semmering Pass
A steady 11.9 km category-2 grind from 455 m to 985 m, averaging 4.46% with a nasty 12.72% pinch and 530 m of net gain.
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Zojila Pass
10.6 km of high-altitude climbing at 5.83% average, topping out at 3470 m after 621 m of net gain and pitches to 11.42%.
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Planche des Belles Filles
14.1 km of restless climbing at 5.32% average, spiking to 19.35%, lifting you 748 m to a 1143 m summit.
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Somport
A practical guide to the Somport cycling climb: 24 km of HC climbing, steady average gradient, serious elevation gain, and sharp ramps that punish poor pacing.
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Somport
A 23.3 km hors catégorie grind averaging 6.11%, hauling you 1424 m up to a 2243 m summit with pitches spiking to 16.69%.
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Rohtang Pass
21.9 km at 9.07% average, ramping to 34.84% and climbing 1987 m to a 3985 m summit — a relentless HC ascent.
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Col de l'Iseran
At 15.4 km with 1,552 m of climbing and a max gradient of 22.13%, the Col de l'Iseran is one of the most demanding paved climbs in the Alps. Here's how to read it and ride it.
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Flüela Pass
A Category 1 Swiss Alpine climb: 8 km at 7.33% average gradient, 584 m net elevation gain, and a brutal 17.28% maximum pitch. Here's how to pace it.
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Col du Grand Colombier
16.4 km, 7.73% average, and a savage 29.43% maximum pitch. The Col du Grand Colombier is one of the most demanding HC climbs in the French Alps.
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plateau de Beille
12.7 km at a relentless 9.87% average, climbing 1252 m of net gain to a 1785 m summit — a true HC test.
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Fuorn Pass
A practical pacing guide to the Fuorn Pass cycling climb, a long category 1 ascent with sustained elevation gain and double-digit ramps.
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Timmelsjoch / Passo del Rombo
17.9 km at 5.68% average, climbing from 1453 m to 2472 m — a 1019 m haul with pitches touching 13.91%.
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Kyzylart Pass
A 23.8 km category 2 haul at 3.88% average, climbing from 3359 m to 4283 m with 924 m of net gain and pitches to 12.44%.
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Julier Pass
The Julier Pass is a 7.8 km Category 2 climb in Switzerland with an average gradient of 6.59% and a punishing 19.44% maximum — here's how to ride it smart.
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Gate of Trajan
A 16 km category 3 grind averaging 3.12%, lifting you 500 m from 336 m to a 836 m summit with spikes to 7.39%.
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Sella Pass
30.2 km of relentless climbing at 5.76% average, hauling you from 470 m up to a 2210 m summit with pitches as steep as 18.76%.
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Col de la Croix de Fer
28.8 km at 5.48%, rising from 484 m to 2061 m — an HC beast that trades short ramps for relentless, saddle-and-swell endurance.
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Gemmi Pass
A practical profile of the Gemmi Pass cycling climb, an HC ascent in Switzerland with 27.8 km of climbing and brutally steep maximum gradients.
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Nangpa La
A sustained HC climb in CN: 26.4 km at 6.36%, rising from 3711 m to 5390 m with ramps up to 10.93%.
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Col de la Croix de Fer
A practical profile of the Col de la Croix de Fer cycling climb, an HC ascent in France with 22.8 km of climbing and steep ramps reaching 17.56%.
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Col d'Aubisque
18.4 km at 6.76% average, ramping to 12.37%, hauling you from 467 m to a 1711 m summit — a full HC test.
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Col de la Madeleine
17.5 km at 7.99% average gradient, nearly 1,400 m of net elevation gain, and an HC category rating. Here's how the Col de la Madeleine actually rides.
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Susten Pass
A 9.9 km hors catégorie climb in Switzerland with a punishing 9.18% average and 1,581 m of total ascent packed into a jagged, undulating profile.
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