A Portela do Eixe

Overview

A Portela do Eixe is a category 1 climb that rewards patience over punch. At 22.1 km, it is long enough to change your whole day, yet its 5.12% average gradient keeps the road just shallow enough to spin rather than grind. From a start elevation of 322 m, the road unwinds steadily to a summit of 1453 m — a net gain of 1131 m. Factor in the rolling dips and re-climbs along the way and your legs actually absorb 1138 m of total ascent, a touch more than the point-to-point figure suggests.

This is a climb of accumulation. There is no single wall that defines it; instead, the difficulty is spread across more than twenty kilometres of near-constant elevation gain. Treat it with respect and it flatters your fitness. Attack it early and those final kilometres will collect the debt.

How the Gradient Unfolds

The headline number, 5.12%, is honest but incomplete. A max gradient of 13.88% tells you the road is far from uniform — it pulses. Expect long stretches sitting right around the average, broken by steeper ramps that briefly nearly triple the effort before easing off again.

Because the average is moderate but the peak is steep, the smart move is to read the road ahead rather than the average behind you. The flatter sections are recovery, not rest — use them to eat, drink, and settle your breathing before the next pitch bites. Over 22.1 km, those short 13.88% kicks are where riders who paced poorly start to unravel.

Pacing Notes

The single biggest mistake on a climb this long is starting too hard. With 1131 m to gain, discipline pays. Aim to hold a steady effort just below your FTP on the sustained sections, and allow yourself to drift above it only briefly on the steepest ramps near 13.88% — never so far that you blow apart.

If you do not know your threshold, estimate it before you ride using the FTP estimator. Knowing that number turns a guess into a plan: it lets you meter your effort across all 22.1 km instead of racing the first few kilometres and surviving the rest.

Gearing

Long climbs punish tall gearing. A compact chainring paired with a wide-range cassette keeps your cadence high and your knees happy across 22.1 km of ascent. A 34×32 will get most riders up the sustained 5.12% sections comfortably, but the ramps toward 13.88% are where you will wish for one more sprocket. If your legs are not race-fresh — or you simply value spinning over straining — fit a 34×34 and give yourself the extra margin. On a category 1 climb this long, the lower gear is insurance you will be glad you bought.

Summary

A Portela do Eixe is a rangy, honest category 1 climb: 22.1 km of steady work, moderate on average yet spiked with steep ramps, delivering you 1131 m higher than where you began. Pace it patiently, gear it generously, and it becomes one of the most satisfying long climbs you can ride.

Length: 22.1 km
Average gradient: 5.12%
Max gradient: 13.88%
Start: 322 m
Summit: 1453 m
Net gain: 1131 m
Total ascent: 1138 m
Category: 1