Passo Socede

Overview

Passo Socede is a hors catégorie climb, the hardest rating on the scale that runs from HC down through categories 1, 2, 3, and 4. Over 22.6 km it lifts you from a start elevation of 362 m to a summit at 2146 m, a net gain of 1784 m with a total ascent of 1766 m once you account for the small dips along the way. The average gradient is 7.91%, and the road bites hardest at 21.46%. This is a big-mountain effort: long enough to reward patience, steep enough to punish anyone who ignores it.

How the Gradient Unfolds

The headline number, 7.91%, describes the whole 22.6 km but hides how the climb actually feels. With a maximum of 21.46%, the pitch varies enormously — long stretches sit near or just above the average while short ramps rear up to nearly three times that. The gap between the net gain of 1784 m and the total ascent of 1766 m is small, which tells you the road climbs almost relentlessly rather than rolling; there is very little false-flat or descending to recover on. Expect a sustained grind punctuated by sharp kicks, with the hardest ramps demanding brief, disciplined efforts before the gradient eases back toward that 7.91% baseline.

Pacing Notes

On a climb this long, pacing is everything. Twenty-two-plus kilometres at 7.91% will expose anyone who starts too hard, so anchor your effort to your sustainable power rather than to how fresh you feel in the first kilometre. Ride the early slopes a touch under your ceiling and save headroom for the 21.46% ramps, where you will spike well above threshold whether you like it or not — let those surges happen, then settle straight back down.

Your FTP is the reference point here: hold a steady percentage of it across the steady sections and treat the steep pitches as unavoidable over-efforts to absorb, not to chase. If you are not sure of your current number, run the FTP estimator before you plan the climb so your targets match reality.

Gearing

Gearing turns a survivable climb into an enjoyable one. With 1784 m to gain at an average of 7.91% and ramps to 21.46%, most riders should err toward the easiest setup they can fit. A compact chainring paired with a wide-range cassette is the sensible baseline: a 34×32 will get many trained riders up the steady sections, but on the steepest pitches you will be grateful for more. If your derailleur allows it, a 34×34 gives you that extra margin to keep the cadence turning through the 21.46% ramps instead of grinding to a near-stall. When in doubt on an HC climb of this length, choose the lower gear — spinning conserves the legs you will still need near the 2146 m summit.

Summary

Passo Socede is a genuine hors catégorie test: long, steep, and unrelenting from 362 m to 2146 m. Pace it to your FTP, gear it low, and respect the 21.46% ramps, and the 22.6 km will reward you with one of the more complete climbing efforts you can ride.

Length: 22.6 km
Average gradient: 7.91%
Max gradient: 21.46%
Start: 362 m
Summit: 2146 m
Net gain: 1784 m
Total ascent: 1766 m
Category: HC