Alto de Puquios

Alto de Puquios cycling climb profile

Alto de Puquios is not complicated because of a single savage wall. It is complicated because the climb asks for a long, controlled effort over 49.5 km, with an average gradient of 6.54% and a rise from 437 m to 3,674 m. That combination makes it an HC climb where the main limiter is not just strength, but how well the rider manages intensity as fatigue and elevation stack up together.

The headline number is the net elevation gain of 3,237 m. On paper, 6.54% sounds steady enough to settle into a rhythm. In practice, an average over this much distance can be misleading. A maximum gradient of 15.43% means the climb contains sections steep enough to force a different cadence and power response, even if the overall profile is defined by sustained climbing rather than a short explosive effort.

How the gradient unfolds

With the available profile data, the safest way to read Alto de Puquios is as a long, mainly sustained ascent rather than a climb that can be broken into precise named ramps or recovery shelves. The start sits at 437 m and the summit at 3,674 m, so the road keeps accumulating vertical gain for a very long time. There is no useful pacing scenario where the opening kilometres can be treated casually.

The 6.54% average is the trap. Ride it like a moderate climb early and the 15.43% maximum pitches become expensive later. On a climb this long, every short over-threshold surge has a cost that shows up downstream, especially as the road approaches the higher part of the ascent. The gradient does not need to be constantly extreme to become decisive. Duration does that work.

Pacing and gearing notes

The right strategy is to pace from the length, not from the average gradient. The climb is long enough that the opening should feel almost restrained. If using power, anchor the effort below the level that would normally feel sustainable on a shorter climb and leave room for the steepest pitches. Riders who know their FTP should think in terms of durability: the goal is not to prove the number early, but to still be able to produce controlled power late.

Gearing should be chosen for the 15.43% maximum gradient, not the 6.54% average. A setup that feels comfortable on a steady mid-single-digit climb can become too tall when the road kicks up and cadence drops. The key is having a low enough gear to stay seated through steep sections without turning them into repeated strength efforts.

Fueling and pacing are linked here. Over 49.5 km, under-fueling early or riding above target on the lower slopes will narrow the margin later. The summit elevation of 3,674 m adds another constraint: the same effort can feel harder high on the climb, so the best ride is usually built on restraint, cadence control, and avoiding unnecessary accelerations.

Bottom line

Alto de Puquios is an HC climb because it combines length, sustained gradient, major elevation gain, and steep maximum pitches. Treat it as a full-duration climbing effort. Save the aggressive riding for the moments where the gradient forces it, not for the lower slopes where the climb is quietly setting the terms.