Paso de Come Caballos

Paso de Come Caballos cycling climb profile

Paso de Come Caballos is not a climb where the headline number needs much decoration. At 17.1 km with an average gradient of 11.49%, it sits in the category of climbs where pacing mistakes show up quickly and are punished for a long time. The road starts at 2,624 m and tops out at 4,585 m, gaining 1,961 m from bottom to summit, so the difficulty is not just the slope. It is the combination of steepness, duration, and altitude.

What it is like to ride

The defining feature is sustained resistance. A climb averaging 11.49% over 17.1 km does not leave much mathematical room for long recoveries. Even if the gradient eases in places, the overall profile tells you that the climb keeps asking for force on the pedals. The listed maximum gradient of 20.7% is important because it changes how the whole ascent should be ridden. This is not simply a steady threshold climb. It is a steep endurance effort with sections where cadence can collapse if you are already riding too close to your limit.

From the start elevation of 2,624 m, the climb is already taking place in thin air. That matters tactically. Power that feels controlled lower down can become expensive as the road rises toward 4,585 m. The upper part should be treated as the part of the climb where restraint pays back. If you spend too much early trying to hold a preferred speed, the final kilometres are likely to become a low-cadence survival effort rather than controlled climbing.

Gradient and pacing

The practical way to read this profile is simple: the average is already severe, and the maximum confirms that there are pitches demanding a reserve. On a climb this steep, pacing by speed is a poor guide because small changes in gradient can create large changes in effort. Pacing by feel, heart rate, or power relative to /glossary/ftp is more useful, but even power needs to be interpreted with the altitude in mind.

Start below the effort you think you can hold. That is not conservative for its own sake - it is the logical response to 17.1 km at double-digit average gradient. The first objective is to keep cadence and breathing under control. The second is to avoid spiking over the steeper ramps, especially anything approaching the listed 20.7% maximum. Those short surges can cost more than they appear to, because there is no easy valley road waiting after them.

Gearing notes

Err on the side of an easier climbing setup. Paso de Come Caballos is long enough that grinding becomes costly, and steep enough that normal climbing gears may feel optimistic once fatigue and altitude stack up. The right gear is the one that lets you stay seated for most of the ascent, protect cadence on the steepest ramps, and avoid turning every pitch into a strength workout.

If you are planning this climb, use your gearing to protect the ride before you use fitness to rescue it. The numbers make the argument: HC category, 17.1 km, 11.49% average, 20.7% maximum, and a summit at 4,585 m. This is a climb to respect from the first metre, not one to negotiate with halfway up.