Alto de la cruz

Overview

Alto de la cruz is a hors catégorie climb, the hardest rating on the road, and the numbers explain why. Over 13.4 km the road lifts you from 361 m at the base to 1493 m at the summit — a net gain of 1132 m at an average gradient of 8.47%. That average alone would qualify most climbs as brutal; sustaining it across more than thirteen kilometres is what pushes Alto de la cruz into HC territory. With a total ascent of 1119 m recorded along the way, there is very little relief to be found: this is a climb defined by relentless, grinding steepness rather than dramatic switchback theatre.

How the Gradient Unfolds

The defining feature of Alto de la cruz is consistency. An 8.47% average with a maximum of only 11.2% tells you the road rarely spikes and rarely eases — the pitch you meet in the opening kilometre is close to the pitch you will still be fighting near the top. The gap between the 8.47% average and the 11.2% maximum is under three percentage points, so there are no punchy ramps to attack and no false-flat recovery zones to coast through. Every kilometre asks roughly the same question. The near-perfect alignment of net gain (1132 m) and total ascent (1119 m) confirms it: there are almost no descents or flat sections breaking up the effort. You climb, and you keep climbing.

Pacing Notes

On a climb this uniform, pacing is everything. Because the gradient holds steady around 8.47%, you cannot bank on downhill respite to recover from an overcooked start — go too hard early and the final kilometres near the 1493 m summit will unravel you. Ride to a power target rather than to feel. A sensible ceiling is to sit just under your FTP and hold it, treating the whole 13.4 km as one long sustained effort. If you do not know your current threshold, estimate it first with the FTP estimator so your target watts are grounded in real data. The reward for even pacing here is large: consistent output on a consistent gradient is the fastest way up.

Gearing

Gear for the average, not the maximum. Because Alto de la cruz sits at 8.47% for so long, the danger is grinding a big gear for over an hour rather than surviving a single steep ramp. A compact 34-tooth chainring paired with a 34×32 low gear is the practical minimum for most riders tackling 1132 m of climbing. If you are carrying fatigue, riding at altitude near the 1493 m summit, or simply want to protect your knees over 13.4 km, step up to a 34×34. The extra range keeps your cadence spinning and your legs fresher for the top.

Summary

Alto de la cruz is a pure sustained-effort HC climb: long, steep, and unforgivingly consistent. Pace it to your threshold, gear low, and respect the 1132 m standing between you and the summit.

Length: 13.4 km
Average gradient: 8.47%
Max gradient: 11.2%
Start: 361 m
Summit: 1493 m
Net gain: 1132 m
Total ascent: 1119 m
Category: HC