Alto de Guática

Overview

Alto de Guática is a Category 1 climb that packs a genuine mountain effort into 9.9 km of road. From the base at 2503 m it rises to a summit of 3223 m, a net gain of 720 m, with the recorded ascent totalling 689 m once the small dips and false flats along the way are accounted for. The average gradient of 7.31% tells you this is never an easy spinner — it is a sustained, honest climb that asks for a steady output from the first pedal stroke.

What sets this ascent apart is altitude. You start above 2500 m and finish beyond 3200 m, so the air is already thin at the bottom and only gets thinner as you climb. That elevation eats into your usual power numbers, and it is the single biggest factor to plan around here.

How the Gradient Unfolds

Over 9.9 km at 7.31% average, the climb settles into a demanding rhythm rather than throwing wild swings at you. The gap between the 7.31% average and the 14.28% max is meaningful: expect the road to sit around that mid-7% figure for long stretches, then ramp toward the steep 14.28% pitches where the gradient briefly doubles.

Because the net gain (720 m) sits above the total recorded ascent (689 m), the profile is almost entirely uphill with very little relief — there are no long descents to recover on. Treat every steep ramp as a moment to stay seated, protect your cadence, and let the gradient come back to you rather than forcing a surge.

Pacing Notes

At this length and steepness, pacing is everything. A climb of roughly 9.9 km at 7.31% is a sustained tempo-to-threshold effort, so anchor your pace to your FTP rather than to how you feel in the first kilometre — the altitude will make an over-eager start very expensive later.

If you do not know your current threshold, estimate it first with the FTP estimator, then aim to hold a comfortably-hard effort just under that number on the steady sections. Save a little margin for the 14.28% ramps: let your power drift up there briefly, then ease straight back to your target once the road relents. Above 3000 m your sustainable output will feel lower than usual, so recalibrate expectations and ride to effort, not ego.

Gearing

Given 9.9 km at 7.31% average with pitches hitting 14.28% — all at altitude — go low. A compact 34-tooth front paired with a wide cassette is the sensible baseline. A 34×32 will get most riders up the steady sections while keeping cadence respectable, but for the steepest ramps and for anyone climbing at less-than-race weight, a 34×34 gives you the extra spin you will be grateful for near the summit. When in doubt on a climb this long and this high, choose the easier gear.

Summary

Alto de Guática is a sustained, high-altitude Category 1 test: long, steep, and unrelenting from 2503 m to 3223 m. Pace to your threshold, gear low, and respect the thin air.

Length: 9.9 km
Average gradient: 7.31%
Max gradient: 14.28%
Start: 2503 m
Summit: 3223 m
Net gain: 720 m
Total ascent: 689 m
Category: 1