Sella Ovest dei Campiluzzi

Overview

Sella Ovest dei Campiluzzi is a hors catégorie climb, the hardest rating on the scale, and the numbers explain why. Over 20 km the road lifts you from a start elevation of 206 m to a summit of 2023 m — a net gain of 1817 m and a total ascent of 1788 m once the small dips are accounted for. The average gradient of 9.07% is brutal not because any single ramp is impossible, but because that steepness almost never lets up across the full 20 km. This is a climb that rewards patience and punishes anyone who treats the first kilometres as a warm-up.

How the Gradient Unfolds

The defining feature here is relentlessness. A 9.07% average sustained for 20 km means there are very few genuine recovery stretches — the gradient hovers around and above that mean for most of the ascent. The steepest recorded pitch hits 17.63%, nearly double the average, so you can expect sharp ramps that spike well past what your legs have settled into. Between those spikes, the road rarely drops into truly easy territory. Because the net gain (1817 m) and total ascent (1788 m) are so close, there is almost no descending mixed in; every metre of forward progress is a metre of climbing. Plan for the summit's thin air too, with the finish sitting at 2023 m.

Pacing Notes

On a climb this long and steep, pacing is everything. Your FTP is the number that matters most — treat it as your ceiling, not your target. Riding the whole 20 km near threshold will empty the tank long before the summit, so aim to sit comfortably below it and hold something in reserve for the 17.63% ramps that force momentary surges. If you don't know your threshold, use the FTP estimator before you commit to a pacing plan. A good rule: if the average feels hard early, the average is winning. Settle into a rhythm you could sustain for well over an hour, and let the steepest pitches be the only place you dip into your reserves.

Gearing

Gear low, then gear lower. For a 20 km climb averaging 9.07% with ramps to 17.63%, a 34×32 is the bare minimum most riders should consider — and even that will feel tall when the gradient bites. If your legs or your load favour spinning over grinding, step up to a 34×34, which gives you meaningfully more room to keep cadence high on the steepest sections. Anyone carrying fatigue, a heavier bike, or altitude in their legs near the 2023 m summit will be grateful for the extra sprocket. Protecting your knees over 1817 m of climbing is worth the small weight penalty.

Summary

Sella Ovest dei Campiluzzi is a full HC test: 20 km of near-unbroken climbing at 9.07%, spiking to 17.63%, delivering 1817 m of net elevation to a 2023 m summit. Come with low gearing, a disciplined pacing plan, and respect for the distance.

Length: 20 km
Average gradient: 9.07%
Max gradient: 17.63%
Start: 206 m
Summit: 2023 m
Net gain: 1817 m
Total ascent: 1788 m
Category: HC