Puerto de La Hiruela

Overview

Puerto de La Hiruela is a category 3 climb in Spain, running 13.9 km from a start elevation of 1,063 m to a summit at 1,481 m. On paper it is a modest ascent: 418 m of net elevation gain spread across nearly fourteen kilometres, for an average gradient of just 3%. That profile puts it firmly in the "long but shallow" bracket, the kind of road you can hold a rhythm on rather than grind up.

The number that reframes the effort is total ascent: 937 m of actual climbing against only 418 m of net gain. That 519 m gap means more than half the vertical you climb is given straight back on descents and false flats along the way. La Hiruela is not one clean drag to the top — it undulates, and every metre you lose you have to earn again. Judge your effort by the total ascent, not the net figure, or you will arrive at the summit more tired than the headline stats suggest.

How the Gradient Unfolds

A 3% average is an accounting artefact here. Because the road repeatedly rises and falls, the flat and downhill sections drag the mean down, which means the climbing pitches are meaningfully steeper than 3%. The single hardest ramp bites at 15.12%, more than five times the average — a gradient that demands respect no matter how easy the overall number looks.

Across the profile, expect:

• Flatter and downhill recovery sections that pull the average toward 3% and let you soft-pedal or freewheel
• Repeated short climbs stacked one after another, which together build the 937 m of total ascent
• A steepest ramp of 15.12%, well above anything the average hints at, where you will need to be in your easiest gear

Pacing Notes

On a climb this lumpy, even-speed pacing is a trap. Holding a constant velocity forces you to spike your power on every rise and coast on every dip, burning matches you cannot replace. Instead, pace to even effort: keep your sustainable power output steady, let your speed climb on the descents and drop on the ramps, and accept the variation. The rollers reward patience — push too hard over the first few rises and the 15% pitch will find you empty.

If you do not know your ceiling, run the FTP estimator first so you have a real number to hold against, rather than guessing your way up 937 m of accumulated climbing.

Gearing

Gearing is dictated by the steepest gradient, not the average. A 15.12% ramp on tired legs is enough to justify a compact or sub-compact chainset paired with a wide-range cassette — a 34×32 or 34×34 combination gives you a bailout that keeps your cadence up and your knees intact when the road kicks. Check your setup before you ride: confirm your cassette actually has that low sprocket, because the average gradient will tempt you to under-gear and the max gradient will punish you for it.

Summary

• Length: 13.9 km
• Average gradient: 3%
• Maximum gradient: 15.12%
• Net elevation gain: 418 m
• Total ascent: 937 m
• Category: 3

Puerto de La Hiruela reads as an easy category 3, and its 3% average will lull you if you let it. The truth is in the 937 m of total ascent and the 15.12% ramp: pace to effort, gear for the steep pitches, and treat the undulation as the real challenge.