Passaggio di Nord Ovest

Overview

The Passaggio di Nord Ovest is a short, uncompromising climb that rewards honesty about your effort. Over just 3.6 km it averages 8.2%, which places it firmly among the gradients where you can no longer hide behind momentum. It starts at 131 m and tops out at 424 m, delivering a net elevation gain of 293 m in a distance most riders can see the top of from the bottom. That density is exactly what makes it hurt: there is nowhere to soft-pedal and recover. Categorised as a category 2 ascent, it sits in the meaty middle of the difficulty scale — harder than the rolling category 3 and 4 climbs, but a step below the marquee category 1 and hors catégorie giants.

How the Gradient Unfolds

The defining feature here is consistency punctuated by bite. An 8.2% average across 3.6 km means the climb rarely relents, and the 11.27% maximum tells you there are ramps that spike well above the mean. Interestingly, the total ascent of 264 m is lower than the 293 m net gain would suggest at a glance — a reminder that GPS-measured ascent and point-to-point elevation difference are two different accountings of the same road. Practically, you should expect long stretches hovering near or just above 8%, with the steepest pitches near 11.27% forcing you out of rhythm. There are no false flats generous enough to coast on; every metre of the 293 m gain is earned under load.

Pacing Notes

On a climb this steep and this short, pacing is really about not detonating early. The temptation is to attack the opening slopes while your legs feel fresh, but 3.6 km at 8.2% will punish an over-eager start. Aim to settle into a sustainable effort anchored to your FTP — for most riders that means holding just under threshold on the average pitches and briefly tolerating a surge above it on the 11.27% ramps, rather than the reverse. If you are unsure of your current threshold, run the numbers through the FTP estimator before you plan your effort. A climb of roughly ten-plus minutes leaves little room to correct a bad start, so err toward controlled and negative-split the back half if the legs are there.

Gearing

Steep and sustained is precisely the profile that demands generous gearing. With ramps hitting 11.27% on top of an 8.2% average, most riders will want a compact chainset paired with a wide-range cassette. A 34×32 is the sensible baseline and will get many climbers up without grinding below their preferred cadence. If you are carrying luggage, climbing on tired legs, or simply spin rather than mash, step up to a 34×34 for extra insurance on the pitches near maximum gradient. The goal is to keep your cadence high enough that the climb stays aerobic for as long as possible rather than devolving into a series of standing lurches.

Summary

The Passaggio di Nord Ovest is a compact test of climbing legs: short enough to attempt at intensity, steep enough to demand respect and the right gears. Pace it like a threshold effort, gear it generously, and let its 293 m of gain come to you.

Length: 3.6 km
Average gradient: 8.2%
Max gradient: 11.27%
Start: 131 m
Summit: 424 m
Net gain: 293 m
Total ascent: 264 m
Category: 2