Forcella Quarazza

Overview

Forcella Quarazza is a hors catégorie monster: 25.4 km of continuous climbing that lifts you from 281 m at the base to a 1819 m summit. That is 1538 m of net elevation gain, backed by 1531 m of total ascent, so the road barely gives anything back on the way up. The 6.06% average gradient sounds civil on paper, but averages lie on climbs this long. Spread over more than 25 kilometres, a 6% mean hides both long tempo drags and at least one wall that ramps to a leg-snapping 28.37%. This is a climb of endurance first and punch second, and it demands respect from the very first pedal stroke.

How the Gradient Unfolds

Think of the ascent in terms of its shape rather than any single number. With a 6.06% average stretched across 25.4 km, most of the road sits in the sustainable tempo band, the kind of grade you can hold seated for long stretches. What separates Forcella Quarazza from a simple metronomic climb is the spread between that average and the 28.37% maximum. A pitch more than four times steeper than the mean means there are sharp, out-of-the-saddle moments that shatter any rhythm you have built. Expect the gradient to breathe: easier ramps where you can recover, then abrupt kickers that force a gear change and a surge of effort. The 1531 m of total ascent versus 1538 m of net gain confirms there is almost no descending relief, so recovery has to come from the flatter grades, not from freewheeling.

Pacing Notes

On a 25.4 km HC climb, pacing is everything. The single biggest mistake is chasing the early kilometres and blowing up before the summit. Anchor your effort to your FTP and hold the long tempo sections just below threshold, saving matches for the steep ramps toward that 28.37% wall. If you do not know your current threshold, run the numbers through the FTP estimator before you commit to a target for the day. With 1538 m of climbing ahead, aim to arrive at the steepest pitches with something left rather than surviving them on fumes. Treat the average as your baseline power and let the spikes be brief, controlled surges.

Gearing

Gearing is not optional on a climb that touches 28.37%. A compact 34-tooth chainring is the sensible front choice, and the question is how much rescue you want out back. A 34×32 is the minimum for most riders tackling 25.4 km at 6.06% average, giving a near one-to-one ratio for the tempo sections. For the 28.37% wall, and for anyone riding conservatively over 1538 m of gain, step up to a 34×34 so you can spin rather than grind. On a climb this long, keeping cadence high protects your legs for the full ascent.

Summary

Forcella Quarazza is a true HC test: long, relentless, and spiked with a brutal maximum. Pace it off your threshold, gear low, and let the numbers guide you.

Length: 25.4 km
Average gradient: 6.06%
Max gradient: 28.37%
Start: 281 m
Summit: 1819 m
Net gain: 1538 m
Total ascent: 1531 m
Category: HC