Alto de Lugo

Overview

Alto de Lugo is a short, savage category 1 climb that packs a full day's suffering into just 6.2 km. Starting at 638 m and topping out at 1213 m, it delivers 575 m of net elevation gain over that distance, which works out to an average gradient of 9.24%. That is not a rolling road with a token steep section tacked on the end — that is a sustained wall. When a climb averages north of 9% across its entire length, there is nowhere to recover, and Alto de Lugo makes you earn every one of its 1213 vertical metres of summit height.

How the Gradient Unfolds

The headline number to respect here is the difference between the average and the maximum. The climb averages 9.24%, but the steepest pitch bites at 15.34% — a swing of roughly 6.1 percentage points above the mean. On a climb this consistently steep, that maximum is not a freak spike over a bridge; it signals genuine ramps stacked on top of an already brutal baseline. Expect the road to hover in the 8-to-10% range for long stretches and then kick toward that 15.34% ceiling without much warning. With only 6.2 km to play with, the gradient never truly relents long enough to shake out your legs. The total ascent of 551 m confirms this is a near-continuous upward grind rather than a stepped profile with flat interludes.

Pacing Notes

On a climb this steep and this short, pacing is everything. The temptation is to attack the lower slopes while the legs feel fresh, but 6.2 km at 9.24% will punish anyone who overcooks the opening. Anchor your effort to your FTP: riders should aim to settle just below or right around threshold, because there is no descent or false flat to bail you out if you blow up. If you do not know your threshold number, run it through the FTP estimator before you commit to a target. When you hit the 15.34% ramp, resist the urge to surge — hold your rhythm, drop the cadence if you must, and let the wall pass rather than fighting it.

Gearing

Do not under-gear this one. With a 9.24% average and pitches to 15.34%, most riders will want the easiest cassette they can bolt on. A compact 34-tooth front paired with a 34×32 is the sensible floor for strong climbers, but honestly, a 34×34 will save your knees and your morale on the steepest ramps. If your bike accepts it, going to that 34×34 lets you spin rather than grind, which matters enormously when the gradient stays this high for this long. Slow and steady beats grinding into the red.

Summary

Alto de Lugo is proof that difficulty is not about length. In just 6.2 km it climbs 575 m to a 1213 m summit, holding a punishing 9.24% average with ramps to 15.34%. Gear low, pace it off your threshold, and treat every metre with respect.

Length: 6.2 km
Average gradient: 9.24%
Max gradient: 15.34%
Start: 638 m
Summit: 1213 m
Net gain: 575 m
Total ascent: 551 m
Category: 1