Alto de las Mesas

Alto de las Mesas cycling climb profile

Alto de las Mesas is not difficult because of one headline number. It is difficult because the numbers stack together in a way that leaves very little room for poor pacing. The climb runs for 24.5 km, averages 7.14%, gains 1747 m from a start elevation of 668 m to a summit elevation of 2415 m, and is classified HC. That combination points to a climb that is long enough to become a fuelling and temperature-management problem, while still being steep enough that there is no easy way to hide from the effort.

The key mistake would be treating the 7.14% average as the whole story. On a climb this long, that average already implies sustained pressure on the pedals. But the listed maximum gradient of 26.62% changes the gearing and pacing equation completely. Even if the steepest pitch is short, it is steep enough to force a major torque spike if you arrive overgeared or already riding too close to threshold.

How the gradient unfolds

The supplied profile data does not give kilometre-by-kilometre splits, so the precise location of the steepest ramps is not stated. What the aggregate numbers do show is a climb with a large net elevation gain and a demanding average gradient across a long distance. In practical terms, this is not a rolling ascent where the average is inflated by a few sharp walls. It is a sustained mountain climb, with at least one brutally steep section embedded inside an already serious effort.

That matters tactically. A rider who paces by feel on the lower slopes may mistake the early rhythm for something manageable, only to find that the climb has accumulated too much fatigue before the hardest pitches arrive. The summit elevation of 2415 m also means the final portion can feel more costly than the same power lower down, especially if the effort has been ridden aggressively from the start.

Pacing and gearing notes

The right approach is conservative, not passive. Settle into a controlled climbing effort early, ideally below your sustainable threshold rather than trying to make the average speed look good in the opening kilometres. If you know your /glossary/ftp, this is the type of climb where discipline matters more than short-term power. The duration implied by 24.5 km at this gradient means small overextensions compound quickly.

Gearing should be chosen for the maximum gradient, not the average. A setup that feels comfortable at 7.14% may become unworkable on a 26.62% ramp, particularly late in the climb when cadence is already under pressure. Prioritise a low climbing gear that lets you stay seated and keep traction if the road steepens sharply.

Fuelling should start before the climb feels hard. With 1747 m of net gain and an HC classification, Alto de las Mesas is long enough that waiting for hunger or fading cadence is too late. The best ride here is built on restraint early, smooth torque through the middle, and enough gearing margin to survive the steepest gradients without turning the climb into repeated anaerobic efforts.