A Portela

Overview

A Portela is a short, sustained effort that rewards a steady head and honest legs. Over just 3.5 km the road lifts you from a start elevation of 387 m to a summit of 642 m, a net gain of 255 m. That works out to an average gradient of 7.37% — steep enough to sit firmly in category 3 and steep enough that there is nowhere to properly recover once you are committed. This is not a climb of hairpins and grand set pieces; it is a compact, uniform grind where the numbers do the talking.

How the Gradient Unfolds

The defining feature of A Portela is how little the gradient wavers. With a 7.37% average and a 8.14% maximum, the difference between the mean and the steepest pitch is under a single percentage point. In practice that means the climb never truly eases and never truly spikes — it simply holds you at a hard, consistent tilt from bottom to top. The total ascent of 229 m sits close to the 255 m net gain, confirming there are no meaningful descents or false flats to break the rhythm. Expect a wall of steady resistance rather than a rollercoaster of ramps and reliefs.

Pacing Notes

Because A Portela is so uniform, pacing is about discipline rather than tactics. There is no summit ramp to save yourself for and no plateau to exploit, so the smartest approach is to settle into a sustainable power target within the first few hundred metres and refuse to let it drift upward. At 3.5 km this is a threshold-style effort for most riders — long enough to hurt, short enough to hold something close to your FTP. If you are not sure what number to anchor to, run your figures through the FTP estimator before you commit, then hold a touch below it early so you have a little in reserve when the 8.14% sections bite.

Gearing

For a climb averaging 7.37% and touching 8.14%, most riders will want a compact setup with a generous cassette. A 34×32 is a sensible baseline and will let a reasonably strong climber keep the cadence turning through the steepest pitches without grinding. If you prefer to spin, or you are carrying fatigue from earlier climbing, step up to a 34×34 for extra margin — the lower ratio costs you nothing on a climb this steady and buys real insurance against blowing up on the harder ramps. On a sustained 3.5 km wall, protecting your cadence is protecting your legs.

Summary

A Portela is a textbook sustained climb: short, steep, and unforgiving in its consistency. Pace it like a threshold interval, gear low enough to keep spinning, and let the uniform 7.37% grade set your rhythm rather than fighting it.

Length 3.5 km
Average gradient 7.37%
Max gradient 8.14%
Start 387 m
Summit 642 m
Net gain 255 m
Total ascent 229 m
Category 3