Paso de las Cuevas

Paso de las Cuevas cycling climb profile

Paso de las Cuevas is an HC climb in Argentina, and the numbers make the character of the ascent clear before the road even starts to bite: 18.8 km at an average gradient of 10.75%, rising from 1372 m to 3393 m. That combination is what makes the climb so demanding. It is not just long, and it is not just steep. It asks for sustained torque while the elevation keeps reducing the margin for error.

The headline figure is the average gradient. Over 18.8 km, 10.75% is severe because it means there is very little room to hide. If the road gives you anything easier, the climb has to take it back somewhere else to preserve that average. The listed maximum gradient of 28.3% confirms that the ascent is not a smooth metronomic grind from bottom to top. There are ramps sharp enough to force a change in cadence, body position, and probably gearing strategy.

How the gradient rides

From the start elevation of 1372 m, the climb gains 2021 m by the summit at 3393 m. That profile creates a simple pacing problem: the bottom can feel manageable if ridden on fresh legs, but the cost of early overpacing compounds quickly. On a climb this steep, small surges above sustainable power are expensive because they usually come with low cadence and high muscular load.

The practical way to think about Paso de las Cuevas is as a long threshold management exercise with repeated torque spikes. The average gradient already sits in the range where many riders are out of comfortable seated rhythm. The 28.3% maximum means there will be moments where simply keeping the bike moving matters more than holding an ideal power number.

Pacing and gearing notes

Start below your target effort, not at it. The climb is long enough that the first hard section should feel controlled rather than heroic. If you use power, anchor the ride around a sustainable climbing output relative to your /glossary/ftp, but allow short increases on the steepest ramps rather than fighting to keep the number perfectly flat.

Gearing should be chosen for the maximum gradient, not the average. A setup that feels fine at 10.75% may become unworkable when the road pitches toward 28.3%. Prioritise a low enough climbing gear to stay seated for as long as possible and to avoid grinding at a cadence that overloads the legs before the upper slopes.

The summit elevation of 3393 m is another reason to be conservative. Even without changing the gradient, the same effort tends to feel more costly higher up. The smartest ride is patient: protect cadence early, avoid unnecessary accelerations, and treat every steep ramp as something to absorb rather than attack. Paso de las Cuevas rewards restraint first, then strength.