Nufenenpass / Passo della Novena

Overview

The Nufenenpass, known in Italian as the Passo della Novena, is a hors catégorie (HC) climb — the hardest rating there is, sitting above categories 1, 2, 3 and 4. Over just 11.6 km it hauls you from 1350 m at the base to 2473 m at the summit, a net gain of 1123 m. The total ascent recorded across the road is 1106 m, meaning the rise is almost relentlessly one-directional, with barely any respite to give back what you've earned.

At a 9.67% average gradient, this is not a climb that flirts with difficulty — it commits to it from the first pedal stroke. Add a max gradient of 17.28% and you have a route that punishes hesitation and rewards a disciplined, honest effort.

How the Gradient Unfolds

Think of the Nufenenpass as a sustained wall rather than a series of distinct steps. With an average of 9.67% held over 11.6 km, there is no long flat middle to hide in — the mean itself is steep enough to have most riders breathing hard the entire way.

The defining feature is the spread between average and peak. When ramps bite up toward the 17.28% max, they sit nearly 8 points above the average, so every steep pitch is a genuine spike in effort rather than a gentle undulation. Because net gain (1123 m) so closely matches total ascent (1106 m), you can trust that whatever you climb, you keep — there are essentially no descents to reset your legs before the summit at 2473 m.

Pacing Notes

The single most useful thing you can do here is ride to a number, not to feel. A climb this long and this steep will tempt you into an opening effort you cannot sustain to 2473 m. Anchor your pacing to your FTP and hold a percentage of it you know you can defend for a 40-plus-minute effort.

If you don't have a recent threshold figure, estimate one first with the FTP estimator, then set a ceiling for the flatter-feeling stretches so you have headroom left for the 17.28% ramps. On those spikes, let power surge briefly but keep cadence from collapsing — grinding to a near-standstill on a 1123 m climb costs far more than a short, controlled overshoot.

Gearing

With a 9.67% average and pitches to 17.28%, gearing is where amateurs make or break this climb. A 34×32 is the sensible minimum for strong riders, but on a wall this sustained it leaves little margin once fatigue sets in over the back half of the 11.6 km.

Most riders will be far happier on a 34×34, which drops the effective gear low enough to spin the steepest ramps rather than lever them over. If your bike accepts it, err toward the easier setup — carrying a spare gear to the 2473 m summit is cheap insurance against blowing up.

Summary

The Nufenenpass / Passo della Novena is a pure test of sustained climbing: no tricks, no recovery, just 11.6 km of steep road to 2473 m. Pace it to your threshold, gear it generously, and treat every 17.28% ramp with respect.

Length: 11.6 km
Average gradient: 9.67%
Max gradient: 17.28%
Start: 1350 m
Summit: 2473 m
Net gain: 1123 m
Total ascent: 1106 m
Category: HC