Portachuelo de Yanta

Portachuelo de Yanta cycling climb profile

Portachuelo de Yanta is an HC climb built less around one brutal headline gradient and more around sustained accumulation. The numbers tell the story: 32.6 km at an average gradient of 5.27%, rising from 1093 m to a summit elevation of 2811 m. That is a long time to be applying pressure, and the climb's difficulty comes from how little margin there is for poor pacing over that distance.

The average gradient can look manageable on paper, but it should not be read as a steady tempo ramp. A maximum gradient of 17.8% means the road has sections sharp enough to break rhythm, force lower cadence, and push riders well above threshold if they arrive overgeared or already carrying fatigue. The key point is that the climb combines duration with spikes. That is usually more costly than a simple average suggests, because every hard ramp creates a physiological debt that has to be repaid while the climb is still continuing.

How the gradient unfolds

With the available profile data, the exact placement of the steepest ramps is not specified, so the smartest way to read Portachuelo de Yanta is as a long, uneven climb rather than a climb with a clearly defined easy or hard half. From bottom to summit, the road gains 1718 m of elevation across 32.6 km, which means the rider is almost always working uphill even when the gradient sits near the average.

The practical implication is simple: do not pace this like a short climb where a rider can absorb surges and recover near the top. The 5.27% average invites a steady aerobic effort, but the 17.8% maximum demands a gear and pacing plan that leaves room for abrupt changes. If the steepest pitches arrive after fatigue has set in, they will feel much harder than the raw number suggests.

Pacing and gearing

Treat the opening kilometres as controlled, not comfortable. On a climb this long, riding even slightly too hard early can turn the final section into damage control. A sensible target is a sustainable climbing effort anchored around endurance to tempo for most riders, with short allowances above /glossary/ftp only when the road forces it.

Gearing should be chosen for the maximum gradient, not the average. The average of 5.27% may suit a normal climbing rhythm, but a 17.8% ramp is a different problem. If the lowest gear only works when fresh, it is not low enough for this climb. Cadence preservation matters here because grinding steep pitches deep into a 32.6 km ascent burns muscular strength quickly and makes it harder to settle back into rhythm afterward.

The best execution is patient and conservative: keep the effort smooth on the moderate sections, avoid chasing speed on flatter-feeling gradients, and save the matches for the steep ramps that cannot be finessed. Portachuelo de Yanta rewards riders who understand that an HC climb is not defined by average gradient alone. It is defined by how long the climb keeps asking questions.