Puerto de Santa Inés

Overview

Puerto de Santa Inés is a long, patient category 1 ascent that rewards riders who respect its distance. From the foot at 883 m, the road unwinds for 21.1 km before topping out at 1881 m, banking 998 m of net elevation along the way. On paper the 4.73% average gradient sounds forgiving, and for long stretches it is — but the total ascent of 980 m confirms this is a climb you settle into rather than attack. At more than twenty kilometres, Santa Inés is a test of rhythm and fuelling far more than raw power. The clean gap between the 998 m net gain and 980 m of climbing tells you the road rises almost continuously, with little in the way of false descents to break your cadence.

How the Gradient Unfolds

The headline number to watch is the contrast between the 4.73% average and the 11.6% maximum. That spread means the climb is not uniform: expect long, sustainable middle-single-digit sections punctuated by sharper ramps that briefly more than double the average. Because the mean sits below 5%, those 11.6% pitches are where the difficulty concentrates — short surges that spike your effort before the road relents again. Over 21.1 km, even modest gradient swings add up, so the smart approach is to read the road ahead, ease into the steep bites, and recover on the shallower gradients that make up the bulk of the ascent. Treat the 998 m of vertical as a budget to spend evenly across the full distance.

Pacing Notes

On a climb this long, pacing is everything. Aim to ride the shallower sections just below your threshold and let the steeper ramps toward 11.6% pull you a little over — but never so far that you blow apart with kilometres still to climb. Anchoring your effort to a percentage of your FTP is the most reliable way to hold back early and finish strong across all 21.1 km. If you do not have a recent number to work from, run the FTP estimator before you ride so your power targets reflect current form. The goal is a near-constant effort from 883 m to 1881 m, absorbing the gradient changes without wild swings in output.

Gearing

With a 4.73% average and ramps to 11.6%, most riders will want a compact setup with plenty of range. A 34-tooth inner chainring paired with a wide cassette handles the long grind comfortably; a 34×32 low gear is enough for many, but on the 11.6% pitches — especially late in the climb with fatigue accumulating over 998 m of gain — a 34×34 gives you the extra spin to keep cadence up and legs fresh. Err toward the easier gear: over 21.1 km, protecting your knees and rhythm matters more than saving a few grams.

Summary

Puerto de Santa Inés is a long, steady category 1 climb best ridden with discipline: pace to your threshold, gear low, and spread the 998 m of climbing evenly across its full length. Get the rhythm right and the 1881 m summit comes to you.

Length: 21.1 km
Average gradient: 4.73%
Max gradient: 11.6%
Start: 883 m
Summit: 1881 m
Net gain: 998 m
Total ascent: 980 m
Category: 1