Puerto de Palombera

Overview

Puerto de Palombera is short on paper and brutal in the legs. At just 2.1 km it barely registers as a climb by distance, but the 9.46% average gradient rewrites that impression the moment the road tilts up. You start at 158 m and finish at 359 m, a net gain of 201 m squeezed into little more than two kilometres. That is the kind of ratio that turns a warm-up into a threshold effort whether you planned it or not.

Officially rated category 3, Palombera sits in the tier below the true monsters, yet its sustained steepness means it punches well above that label. There is nowhere to hide across its length, and the numbers make the demand clear before you turn a pedal.

How the Gradient Unfolds

The defining feature here is consistency of pain. With an average of 9.46% and a maximum of 11.86%, the spread between "normal" and "hardest" is only about 2.4 percentage points. Most climbs lull you with flatter sections and then ambush you with a ramp. Palombera does not. It settles into a high single-digit rhythm and holds there, with the steepest pitch topping out at 11.86%.

Note also the difference between the two elevation figures. The net gain is 201 m, but the total ascent logs 183 m, an 18 m gap that hints at the road's small undulations rather than a single clean line upward. Practically, that means you should expect the grade to stay honest from bottom to top, with the hardest kick likely arriving where the 11.86% max is recorded rather than saved for a summit surprise.

Pacing Notes

On a climb this steep and this short, pacing is really about not overcooking the opening. The temptation is to attack the first ramp, but with 2.1 km of 9.46% ahead, an early spike will cost you dearly in the final third. Aim to hold an even effort just under your threshold and let the gradient, not your ego, set the tempo.

Riders who know their FTP can plan this with precision: at these grades you will likely sit at or slightly above threshold power the whole way, so a climb like this is often ridden as one continuous over-threshold block. If you have not benchmarked yourself recently, run the numbers through the FTP estimator before you commit to a target wattage. Getting that figure right is the difference between cresting strong and blowing apart near the top.

Gearing

Do not underestimate a 9.46% average. For most riders a compact chainring paired with a wide-range cassette is the right call. A 34×32 will get many trained climbers up at a workable cadence, but given the 11.86% max ramps, a 34×34 is the smarter, kinder choice — it lets you spin rather than grind through the steepest pitch. If your bike allows an even larger sprocket, take it; there is no prize for suffering with too tall a gear on a wall this steep.

Summary

Puerto de Palombera is a compact, uncompromising climb: 2.1 km that never eases off, gaining 201 m to a 359 m summit. Pace it evenly, gear low, and respect the near-double-digit average.

Length: 2.1 km
Average gradient: 9.46%
Max gradient: 11.86%
Start: 158 m
Summit: 359 m
Net gain: 201 m
Total ascent: 183 m
Category: 3