Alto de las Lagunillas

Alto de las Lagunillas cycling climb profile

Alto de las Lagunillas is a category 2 climb built around a simple but important tension: the overall numbers say controlled endurance effort, while the maximum gradient says you cannot ride it lazily.

The climb runs for 7.8 km from a start elevation of 7 m to a summit elevation of 447 m, gaining 440 m net elevation. Its average gradient is 5.64%, which puts it in the range where a fit rider can settle into rhythm rather than fight the road every pedal stroke. But the listed maximum gradient of 13.51% changes the way it should be approached. This is not just a smooth tempo ramp. Somewhere on the ascent, the road gets steep enough to punish overgearing and poor pacing.

How the gradient shapes the ride

With an average of 5.64% over 7.8 km, the climb asks for sustained aerobic work rather than repeated all-out surges. The key is not to be fooled by the average. A climb can feel manageable for long stretches and still contain steep pitches that force torque through the pedals. The 13.51% maximum gradient is the warning label here.

That means the most efficient way to ride Alto de las Lagunillas is to keep the early effort slightly contained. If the opening feels comfortable, that is not a reason to push above threshold. It is a reason to protect the legs for the steeper sections. On a climb of this length, burning matches too early usually shows up as a forced cadence drop later, especially when the gradient kicks above the average.

Pacing strategy

Treat the first part as a controlled build. Ride below the effort you think you can hold, then let the climb reveal where the harder gradients sit. If using power, anchor the effort around sustainable climbing intensity rather than chasing speed, because changes in gradient will distort pace. Riders familiar with their /glossary/ftp should avoid repeated surges well above it unless they are near the summit or responding to a decisive move.

The middle of the climb is where discipline matters most. At 7.8 km, this is long enough that small pacing errors compound, but not so long that you can completely reset after a hard overreach. If you hit the 13.51% maximum gradient already riding at the limit, the climb will force you into damage control.

Gearing notes

Gear for the maximum, not the average. A setup that feels perfect at 5.64% can become too heavy when the road reaches 13.51%. The best choice is a low enough climbing gear to keep cadence from collapsing on the steepest pitch while still letting you ride smoothly on the steadier sections.

Seated climbing should be the default because the average gradient supports rhythm, but short standing efforts may be useful on the steepest ramps. The practical goal is simple: arrive at the final section with enough control to lift the effort, rather than reaching the summit after several kilometers of grinding.