Portella Buffali

Overview

Portella Buffali is a genuine hors-catégorie effort, the kind of climb you plan a whole ride around rather than stumble into. Over 24.4 km it drags you from a low start at 56 m all the way to a 1526 m summit, a net gain of 1470 m. The average gradient reads 6.02%, which on paper looks civilised, but averages flatter over long climbs. Because the road climbs 1470 m in net terms while total ascent tallies 1458 m, there is almost no relief hidden in the profile — this is a near-continuous drag upward with a category rating (HC) that tells you everything about the commitment required.

How the Gradient Unfolds

The headline average of 6.02% is a poor guide to how Portella Buffali actually feels. With a maximum pitch of 18.97%, there are ramps here nearly three times steeper than the mean, and those spikes are what shape the climb. Expect long sustained sections sitting close to the 6% average, punctuated by sharper walls where the gradient rears toward that 18.97% ceiling. The gap between total ascent (1458 m) and net gain (1470 m) confirms there is essentially no descending to recover on — every metre you climb, you keep. That makes the steep bursts more punishing, because there is no downhill afterward to spin the legs loose.

Pacing Notes

On a climb this long, discipline beats bravado. The full 24.4 km will take most riders well over an hour, so ride to a power you can hold for that entire duration rather than the number you can survive for ten minutes. Anchor your effort to your FTP: on the 6.02% average stretches, settle just below threshold and leave headroom for the pitches climbing toward 18.97%, where cadence collapses and power spikes whether you want it to or not. If you do not know your threshold, run the numbers through the FTP estimator before you commit, because misjudging your ceiling on 1470 m of climbing is a mistake you pay for all the way to 1526 m. Fuel early and often — the summit is a long way from the 56 m start.

Gearing

Bring more gear than you think you need. For an HC climb averaging 6.02% but spiking to 18.97%, a compact 34-tooth chainring paired with a wide-range cassette is the sensible baseline. A 34×32 will get most fit riders up the sustained sections, but on the steepest ramps toward 18.97%, and with tired legs deep into the 24.4 km, you will be grateful for a 34×34. If your frame and derailleur accept it, the extra sprocket is cheap insurance across 1470 m of climbing. Spinning a low gear at a manageable cadence protects your legs far better than grinding a gear that is slightly too tall.

Summary

Portella Buffali earns its HC status honestly: 24.4 km, 1470 m of net gain, and pitches steep enough to break a rhythm you spent an hour building. Pace it with your threshold in mind, gear low, fuel early, and respect the distance between the 56 m start and the 1526 m summit.

Length: 24.4 km
Average gradient: 6.02%
Max gradient: 18.97%
Start: 56 m
Summit: 1526 m
Net gain: 1470 m
Total ascent: 1458 m
Category: HC