Alto de La Hornilla

Alto de La Hornilla cycling climb profile

The Alto de La Hornilla cycling climb is a compact but meaningful effort: 6.6 km at an average gradient of 6.06%, rising from 147 m to 547 m. On paper, that puts it in the category 2 range, and the numbers explain why. It is not long enough to become a pure endurance grind, but it is sustained enough that poor pacing in the opening section will show up before the summit.

The key detail is the relationship between the average gradient and the maximum gradient. An average of 6.06% suggests a climb that is generally rideable at threshold-adjacent pressure for a trained rider, but the 9.45% maximum tells you there are sharper ramps where momentum and gearing matter. This is the kind of ascent where the hard parts are unlikely to be decisive on their own unless you arrive at them already overextended.

How the gradient shapes the ride

With 400 m between the start elevation and summit elevation over 6.6 km, the climb gains height steadily rather than through one isolated wall. That makes pacing more important than aggression. The total ascent is listed at 384 m, which reinforces the same basic picture: the road trends upward consistently enough that there is little room to recover fully once the climb is underway.

The practical takeaway is simple. Treat the lower slopes as setup, not as a place to prove fitness. If you ride the first part above sustainable climbing power, the steeper pitches near the 9.45% maximum will force a costly correction. On a climb averaging just over 6%, the best performance usually comes from holding a controlled rhythm and letting the gradient changes dictate small shifts in cadence rather than big surges in effort.

Pacing and gearing notes

For pacing, anchor the effort just below your known climbing limit, then allow brief pressure increases on the steepest ramps. If you use power, this is a climb where /glossary/ftp discipline matters: riding a little too hard early can turn a manageable category 2 climb into a fading threshold test.

Gearing should prioritise cadence control. The average gradient does not demand survival gearing for most fit riders, but the 9.45% maximum means you want a low enough option to stay seated and avoid grinding when the road bites. If your easiest gear only works when you are fresh, it is probably too ambitious for a steady ascent like this.

Bottom line

Alto de La Hornilla is best approached as a sustained aerobic climb with enough steepness to punish impatience. Start measured, keep the torque under control, and save the real work for the ramps where the gradient moves closer to its maximum. The climb is not defined by extreme length or altitude. It is defined by how cleanly you manage a steady 6.6 km rise without letting the sharper sections break your rhythm.