Paso de Tiburcio

Paso de Tiburcio cycling climb profile

Paso de Tiburcio is a category 1 climb in Chile that asks for discipline from the lower slopes. The headline is simple: 11.4 km at an average gradient of 8.06%, rising from 1592 m to 2513 m for 921 m of net elevation gain. That combination makes it less about short-term punch and more about whether you can keep producing controlled power while the road keeps leaning against you.

The average gradient is the key number here. At just over 8% across the full climb, Paso de Tiburcio is unlikely to offer much free recovery. Even if the road briefly eases, the overall profile suggests the baseline effort stays firmly in climbing territory. The maximum gradient of 12.91% matters because it changes how the climb should be ridden: this is not just a steady diesel test. There are sections steep enough to punish anyone who arrives overgeared or already riding above threshold.

How the gradient shapes the effort

The most efficient way to ride Paso de Tiburcio is to treat the opening as a cost-control exercise. The climb gains height quickly, and with the summit at 2513 m, the final part of the effort comes after a long vertical accumulation rather than a short ramp. If you burn matches early, the later steep pitches become much more expensive.

The 12.91% maximum gradient should influence gear choice before the climb starts. Use an easy enough climbing gear that lets you stay seated through the steepest ramps without forcing a low-cadence grind. Standing can help reset the legs, but if it becomes the only way to keep the bike moving, the gearing is too ambitious for an 11.4 km climb at this average grade.

Pacing and gearing notes

Start below the effort you think you can hold. On a climb averaging 8.06%, small surges compound quickly, especially when the road kicks toward its maximum gradient. A good target is a smooth, sustainable pressure for the first section, then a gradual lift only once the climb has settled and you know how the steep ramps are affecting your breathing and cadence.

For riders using power, anchor the effort around your sustainable climbing output rather than chasing speed, since the gradient will dictate pace more than momentum. For riders pacing by feel, keep the early effort controlled enough that you can still accelerate slightly near the top. If the final kilometers become survival, the mistake was probably made near the bottom, not near the summit.

Paso de Tiburcio rewards the rider who respects the numbers: long enough to expose poor pacing, steep enough to punish poor gearing, and high enough that a controlled finish is worth more than an aggressive start. For related pacing concepts, see /glossary/ftp and /tools/ftp-estimator.