Paso de Araya

Paso de Araya climb profile

Paso de Araya is a long, altitude-gaining Category 1 climb in Argentina, and its defining feature is not brutality from the first pedal stroke. It is accumulation. At 30.4 km with an average gradient of 4.57%, the climb asks for sustained aerobic control more than repeated anaerobic punches. The summit sits at 2626 m after starting at 1236 m, so the work is not just about slope. It is about holding the right effort while gaining a large amount of elevation over a long time.

The net elevation gain is listed at 1390 m, which explains why the climb carries weight despite the moderate average gradient. A rider who treats 4.57% as easy can get into trouble here. Over this distance, even a small over-pace early becomes expensive because there is so much climbing still to come.

How the gradient rides

The average gradient points to a climb that is mostly manageable if paced correctly, but the maximum gradient of 10.84% changes the way it should be approached. This is not a pure diesel climb where one gear and one power number will solve everything. The steeper ramps are high enough to force cadence down if the gearing is too ambitious, especially late in the climb when fatigue has already accumulated.

Because the climb is 30.4 km long, the key is to separate effort from speed. On the shallower sections, speed may feel acceptable and the temptation is to ride slightly above target. That is the trap. The harder sections reaching up toward 10.84% will demand extra torque regardless, so the smarter ride is to leave margin early and let the steeper pitches come to you.

Pacing and gearing notes

Use a pacing plan based on sustainable climbing power, not the opening sensation. If riding with power, anchor the first part below your true threshold rather than trying to prove the climb is gentle. For a rider using /glossary/ftp, this is a climb where discipline matters more than aggression.

Gearing should be chosen for the steepest ramps, not the average gradient. A setup that feels efficient at 4.57% can become restrictive when the road touches 10.84%, particularly after a long period of continuous climbing. The right gear is the one that lets you keep pressure smooth without grinding every time the gradient lifts.

Practically, Paso de Araya rewards a negative-split mindset: controlled early, steady through the middle, then more committed only once the summit elevation is realistically within reach. The climb is long enough that poor pacing will show, but not so steep on average that it forces chaos. Ride it patiently and it becomes a measured endurance climb. Ride it impatiently and the distance will do the damage.