Portella Gaggetto

Overview

Portella Gaggetto is a long Italian category 2 climb that trades on distance rather than raw steepness. Over 22.2 km it lifts you from a start elevation of just 25 m to a summit at 881 m, a net gain of 856 m. The average gradient reads a modest 3.85%, the kind of number that suggests a steady, rhythmic ascent. But averages hide as much as they reveal: a max gradient of 20.63% lurks somewhere on the road, and that single ramp changes how you have to think about the whole effort.

At 22.2 km, this is a climb measured in patience. The total ascent of 873 m sits just 17 m above the net gain, which tells you the road climbs almost relentlessly upward with barely any give-back — there are no meaningful descents to recover on. What you gain, you keep.

How the Gradient Unfolds

Do the arithmetic and the character of Portella Gaggetto becomes clear. An average of 3.85% across 22.2 km is comfortable on paper, yet the max gradient of 20.63% is more than five times that average. That gap — nearly 16.78 percentage points between the mean and the peak — means the climb is far from uniform. Long, gentle stretches must exist to pull the average down that low, which in turn means the steep sections are genuinely steep, not just briefly awkward.

With only 17 m of difference between total ascent and net gain, the road never truly relents. Expect a rolling, mostly-up profile where you are always working, punctuated by at least one wall that spikes toward 20.63%. Read the road ahead and shift early.

Pacing Notes

On a climb this long, discipline beats bravado. Anchor your effort to your FTP: on the gentle 3.85% sections, ride at or just under threshold and let the rhythm do the work. Hold something in reserve for the 20.63% pitch, where power spikes and cadence collapses whether you like it or not.

If you do not know your threshold, estimate it first with the FTP estimator so your target watts reflect reality rather than optimism. Over 22.2 km and 856 m of gain, pacing 20 watts too high early will cost you dearly by the summit.

Gearing

The average may be tame, but the 20.63% max is what dictates your setup. A compact 34-tooth inner ring is essential here. Pair it with at least a 34×32 for the shallower gradients, and if you have any doubt about grinding up a one-in-five ramp with tired legs after 20-plus kilometres, run a 34×34. The wider range costs you nothing on the gentle stretches and saves your knees on the wall. For a 22.2 km climb with a spike this sharp, gear for the worst section, not the average.

Summary

Portella Gaggetto rewards riders who respect its length as much as its steepest ramp. Pace to your threshold, gear for the 20.63% pitch, and the 856 m of climbing will come to you.

Length: 22.2 km
Average gradient: 3.85%
Max gradient: 20.63%
Start: 25 m
Summit: 881 m
Net gain: 856 m
Total ascent: 873 m
Category: 2