Porto de Laxe

Overview

Porto de Laxe is a 4.6 km category 4 climb that trades brute force for rhythm. From a start elevation of 249 m it lifts you to a summit of 430 m, a net elevation gain of 181 m across the full 4.6 km. The average gradient of 3.96% puts it firmly in the tempo bracket rather than the leg-breaking end of the spectrum, and the total ascent of 158 m confirms this is a road that climbs steadily rather than lurching upward in walls. It is the kind of ascent you can ride within yourself, holding a smooth cadence, only occasionally forced out of the saddle.

How the Gradient Unfolds

The headline numbers frame the shape of the road. With a 3.96% average and a 7.42% maximum, the steepest pitch is only a little under twice the mean, which tells you the gradient stays disciplined. There are no sustained double-digit ramps here — the 7.42% marks the hardest section rather than a defining wall, and it likely arrives in a short pinch flanked by gentler stretches. Because the net gain of 181 m is spread so evenly over 4.6 km, expect long passages hovering right around the average, punctuated by that single stiffer kick. The gap between the 158 m total ascent and the 181 m net gain is small, meaning the profile barely dips — you keep climbing almost the whole way rather than recovering on false flats.

Pacing Notes

On a climb this length and gradient, pacing is about restraint at the base. The temptation on a 3.96% average is to push too hard early because it feels easy — resist it. Aim to hold a steady effort just below your threshold, saving a little for the 7.42% pinch so it does not spike your heart rate. A good reference point is your FTP: riding Porto de Laxe at or slightly under that wattage lets you cover the 4.6 km without blowing up before the summit at 430 m. If you are not sure of your current number, run it through the FTP estimator before you set your target. On the steeper section, drop a gear and lift your cadence rather than mashing — spin over the pinch, then settle straight back into tempo.

Gearing

For a climb averaging 3.96% with a maximum of 7.42%, most riders will be comfortable on standard compact gearing. A 34×32 bottom gear gives you plenty of range to sit and spin through the steepest 7.42% pitch while keeping cadence high on the sustained tempo sections. If you prefer to climb seated and turn a lighter gear, or you are carrying fatigue, a 34×34 offers a touch more margin for the same effort. Either setup handles this profile well — the 34×34 simply buys you a slightly easier spin for the one hard kick.

Summary

Porto de Laxe is an honest, rhythmic category 4 climb: 4.6 km of steady tempo gaining 181 m to a 430 m summit, with just one 7.42% pinch to interrupt the flow. Pace it just under threshold, spin the steep bit, and it rewards a smooth engine.

Length: 4.6 km
Average gradient: 3.96%
Max gradient: 7.42%
Start: 249 m
Summit: 430 m
Net gain: 181 m
Total ascent: 158 m
Category: 4