Alto de Luisa

Overview

Alto de Luisa is a long, high-altitude category-1 climb that stretches 23.1 km from a start elevation of 1455 m to a summit at 2450 m. On paper its 4.3% average gradient reads as gentle, but that number hides the real character of the ascent. With a net elevation gain of 995 m and a total ascent of 1026 m, the road is not a uniform ramp — the difference between those two figures tells you there are brief downhill or flat sections mixed in, meaning the climbing that remains is steeper than the average implies. A steepest pitch of 10.75% confirms it: this is a climb of contrasts, where long tempo drags are broken up by sharp kicks that demand a response.

How the Gradient Unfolds

The 4.3% average is a blend, not a constant. Because total ascent (1026 m) exceeds net gain (995 m) by 31 m, some of the road gives back a little elevation before clawing it back again. That has two consequences. First, the genuinely uphill kilometres carry a gradient higher than 4.3% to compensate for the flatter stretches. Second, the 10.75% maximum lives in one of those pinch points — a section more than double the average where momentum evaporates fast. Expect the climb to breathe: shallow enough to roll a big gear in places, then abruptly steep enough to force you out of the saddle. Over 23.1 km, managing those transitions is the whole game.

Pacing Notes

At 23.1 km this is a sustained effort, so pace it by power rather than feel. Ride the tempo sections just under your threshold and reserve headroom for the 10.75% ramps, where surges cost far more energy than they appear to. Anchor your target to your FTP: on the 4.3% stretches sit comfortably below it, and treat the steep pinches as short over-threshold efforts you recover from once the road relents. Because the climb tops out at 2450 m, thinning air late on will quietly trim the power you can hold — bank effort early rather than chasing it near the summit. If you don't know your number, run the numbers through the FTP estimator before you set your climbing targets.

Gearing

The combination of length, altitude, and a 10.75% maximum makes low gearing the smart call. A compact 34-tooth chainring paired with a 34×32 cassette gives most riders enough range to spin the steep pitches without grinding, keeping cadence up across the full 23.1 km. If you climb at lower cadence, tire on long efforts, or expect fatigue to bite before the 2450 m summit, size down to 34×34 for extra insurance on the 10.75% ramps. On a climb this long, the easier gear you rarely use beats the hard gear you're forced into.

Summary

Alto de Luisa rewards patience: a long category-1 climb where a modest 4.3% average masks steep pinches up to 10.75% and a summit thin enough to matter. Pace by power, gear low, and let the road's rhythm dictate yours.

Length: 23.1 km
Average gradient: 4.3%
Max gradient: 10.75%
Start: 1455 m
Summit: 2450 m
Net gain: 995 m
Total ascent: 1026 m
Category: 1