Vado di Corno

Overview

Vado di Corno is one of the most uncompromising climbs you can point a road bike at. Over 15.2 km it averages a savage 12.86%, hauling you from a start elevation of 279 m to a summit of 2240 m. That is a net elevation gain of 1961 m, with 1896 m of total ascent packed into a single sustained effort. There is no soft-pedal category here: this is HC, hors catégorie, the hardest rating on the scale ahead of categories 1, 2, 3 and 4.

An average gradient approaching 13% over more than fifteen kilometres is rare air. Most riders will never face anything this steep for this long. Treat it with respect from the first pedal stroke.

How the Gradient Unfolds

The defining feature of Vado di Corno is not a single wall but the relentlessness of the whole. With a 12.86% average, even the "easier" stretches sit well into double digits. Because total ascent (1896 m) sits close to the net gain (1961 m), there is essentially no descending or false-flat recovery built into the climb — what you gain, you keep. The road simply goes up.

That matters for how it feels. On climbs with rolling sections you can recover on the dips. Here you cannot. Every one of the 15.2 km asks the same brutal question, and the thin air near the 2240 m summit only sharpens it.

Pacing Notes

Discipline wins this climb. At a sustained 12.86% you have no gravity-assisted recovery, so going into the red early is a one-way ticket to walking. Anchor your effort to your FTP and hold a wattage you can genuinely sustain for the better part of an hour, not a number that flatters you on a five-minute test.

If you are unsure of your sustainable power, run the numbers first with the FTP estimator and set a hard ceiling. On a climb this steep, riding just a few watts under threshold from the base is far faster than surging and blowing up before you reach 2240 m. Ride the climb, do not attack it.

Gearing

Do not underestimate what 15.2 km at 12.86% demands from your drivetrain. A compact chainring paired with a wide cassette is the minimum sensible setup. A 34×32 will get strong climbers to the top, but on gradients this severe most riders will be grinding at very low cadence and torching their legs.

For the majority, go easier: a 34×34 gives you a meaningfully lower gear that protects your knees and lets you spin rather than lever your way up. If your frame and derailleur can take an even larger sprocket, take it. On Vado di Corno, there is no such thing as too easy a gear.

Summary

Vado di Corno is a pure test of sustained climbing: long, uniformly steep, and utterly without relief. Pace it to your FTP, gear low, and respect the full 15.2 km. Do that and the 2240 m summit is one of the great rewards in cycling.

Length: 15.2 km
Average gradient: 12.86%
Max gradient: n/a
Start: 279 m
Summit: 2240 m
Net gain: 1961 m
Total ascent: 1896 m
Category: HC