Paso de las Vacas

Paso de las Vacas cycling climb profile

Paso de las Vacas is a category 2 climb in Chile that asks for controlled, steady work rather than a single all-out effort. The climb runs for 7.7km, starts at 22m, and tops out at 454m, giving it a net elevation gain of 432m. On paper, the 5.61% average gradient makes it look manageable, but the 9.9% maximum gradient is the number that should shape how you ride it.

That gap between the average and the maximum matters. A climb averaging just over five and a half percent can tempt riders into settling into a tempo rhythm early, but the presence of near double-digit pitches means the effort is unlikely to feel completely uniform. Even without segment-by-segment gradient data, the basic profile points to a climb where the sustainable pace is set by the steeper sections, not the average.

How the gradient rides

From bottom to summit, the climb is best understood as a sustained rise with enough variation to punish poor pacing. Starting from 22m, there is no altitude complication to manage, so the limiter is straightforward: muscular endurance and the ability to stay efficient when the road pitches toward its 9.9% maximum.

The 7.7km length is long enough that an early surge can come back hard before the summit, especially if the steeper ramps arrive after you have already spent too much above your natural climbing rhythm. The average gradient is moderate, but it still produces a real category 2 workload because it is held for long enough to expose any pacing mistakes.

Pacing and gearing notes

Ride Paso de las Vacas like a climb where the average gradient is a guide, not permission to overreach. The smartest approach is to keep the opening controlled and leave room to absorb the steepest pitches without forcing the gear.

Practical execution:

• Settle into a sustainable effort early, especially if using /glossary/ftp as your pacing anchor.
• Avoid chasing speed on the easier portions if it pushes you above your climbing rhythm.
• Keep a gear available for the 9.9% maximum gradient, because grinding those sections can spike fatigue quickly.
• If riding it in a longer route, treat the climb as a steady aerobic load with short muscular demands layered on top.

The key is restraint. Paso de las Vacas is not defined by an extreme average gradient, but by the way a moderate 7.7km climb can become expensive if the near double-digit pitches force repeated accelerations. The efficient ride is patient, geared correctly, and paced from the summit backward.